Maths
Chemistry
Biology
English Language
History
Responding to change (a2 only)
Infection and response
Homeostasis and response
Energy transfers (a2 only)
Cell biology
Organisms respond to changes in their internal and external environments (a-level only)
Biological molecules
Organisation
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
Show all topics
Britain & the wider world: 1745 -1901
1l the quest for political stability: germany, 1871-1991
The cold war
Inter-war germany
Medieval period: 1066 -1509
2d religious conflict and the church in england, c1529-c1570
2o democracy and nazism: germany, 1918-1945
1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
2m wars and welfare: britain in transition, 1906-1957
World war two & the holocaust
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
Show all topics
Biology
30 Nov 2025
847
15 pages
simranjeey @simranjeey_djsyzjrig
Your body is like a highly coordinated machine with multiple systems working together to keep you alive. The... Show more
Ever wondered how your heart manages to pump blood non-stop throughout your entire life? The cardiac cycle is basically your heart's rhythmic squeeze-and-release pattern that happens about 60-70 times every minute.
The cycle starts with atrial diastole - both atria (top chambers) relax and fill with blood from your body and lungs. Then the atria contract, forcing the atrioventricular valves open so blood flows into the ventricles below during ventricular diastole.
Next comes the powerful bit - ventricular systole. The ventricle walls contract hard, slamming the AV valves shut to prevent backflow, then forcing the semi-lunar valves open. This pushes blood into your pulmonary artery (to lungs) and aorta (to body). When pressure drops, those semi-lunar valves snap shut, and the whole cycle starts again.
Key Point Remember that systole = contraction and diastole = relaxation - this will help you understand any heart-related exam questions!
Your cardiovascular system is essentially your body's transport network, delivery service, and security team all rolled into one. It's got three main jobs that keep you functioning properly.
Transport is the big one - your blood carries oxygen from lungs to tissues, glucose for energy, and removes carbon dioxide and waste products. Think of it like Amazon delivery, but for your cells.
The system also helps control body temperature by moving warm blood around and adjusting blood flow to your skin. Finally, it protects your body through blood cells and antibodies that fight infections, plus clotting factors that stop you bleeding out from cuts.
Remember Your cardiovascular system is multitasking constantly - it's not just about moving blood around!
Breathing might seem automatic, but there's actually a clever mechanical process happening in your chest. Inspiration (breathing in) starts when your diaphragm contracts and flattens out, increasing the space in your chest cavity.
When you need more oxygen (like during exercise), your external intercostal muscles also contract, pulling your rib cage up and out. This creates lower pressure in your lungs compared to outside, so air rushes in naturally.
Expiration (breathing out) is mainly passive - elastic fibres in the alveoli shrink back, increasing pressure and squeezing air out. During exercise, your internal intercostals contract and abdominal muscles push your diaphragm back up to force more air out quickly.
Top Tip The key is pressure differences - air always flows from high pressure to low pressure areas.
Your kidneys are like sophisticated water treatment plants that work 24/7 to keep your blood chemistry spot-on. They remove urea (toxic waste from protein breakdown) and control water, ion levels, and pH balance.
The renal arteries bring oxygenated blood to each kidney for processing, then the cleaned blood leaves via renal veins back to your heart through the vena cava. Each kidney has three main regions the cortex (outer layer), medulla (middle), and renal pelvis (centre) that connects to the ureter.
Your ureters transport urine from kidneys to the bladder for storage. The sphincter muscle acts like a tap, controlling when urine is released through the urethra. It's a brilliant system that maintains your body's internal environment.
Did You Know Your kidneys filter about 180 litres of fluid daily, but you only produce about 1-2 litres of urine!
Each kidney contains about one million tiny nephrons - these are the actual workhorses that produce urine. They're perfectly designed with loads of blood capillaries nearby for efficient filtering and processing.
The glomerulus and Bowman's capsule work together for initial blood filtration. The glomerulus lets small molecules like water, urea, and glucose pass through, but blocks large proteins and blood cells from entering the tubule system.
The proximal convoluted tubule is brilliant at reabsorption - it completely reclaims glucose, amino acids, and important ions like phosphate. Its walls are packed with microvilli (tiny projections) for maximum surface area, plus loads of mitochondria to power active transport.
Smart Design The nephron's structure perfectly matches its function - every part is optimised for filtering and reabsorbing what your body needs.
The collecting duct is where your body fine-tunes how concentrated your urine becomes. It reabsorbs water by osmosis depending on how much your body needs - clever stuff that prevents dehydration or overhydration.
The Loop of Henle creates a brilliant concentration system in the kidney's medulla. It produces very high concentrations of solutes, creating extremely low water potential that allows maximum water reabsorption from the filtrate.
This complex network of blood vessels and tubules means most of that 180cm³ of daily filtrate gets returned to your blood. Only the waste and excess water becomes the 1-2 litres of urine you actually produce.
Amazing Fact Your kidneys can produce urine that's either more or less concentrated than your blood plasma, depending on your body's needs.
The Loop of Henle is basically a salt gradient generator that gives your kidneys incredible control over water balance. This process, called osmoregulation, lets you produce either concentrated or dilute urine as needed.
Here's the clever bit sodium and chloride ions actively transport out of the ascending limb, reducing water potential in surrounding tissue. Meanwhile, the ascending limb walls are impermeable to water, so the fluid loses salts but keeps its water.
This creates a concentration gradient that pulls water out of the descending limb by osmosis. Salts then diffuse into the descending limb from the concentrated tissue fluid, maintaining the gradient. It's like a biological desalination plant!
Key Concept The countercurrent flow (opposite directions) in the loop multiplies the concentration effect, making this system incredibly efficient.
Ultrafiltration is your kidney's first step in cleaning blood - it's basically high-pressure filtering that pushes fluid from blood into Bowman's capsule. Think of it like a coffee filter, but for your bloodstream.
The glomerulus receives blood through the afferent arteriole and sends it out via the efferent arteriole. Here's the clever part - the afferent arteriole is wider than the efferent one, creating a traffic jam effect.
This diameter difference cranks up the blood pressure in glomerular capillaries, forcing fluid out into Bowman's capsule (which has much lower pressure). Blood cells and proteins stay in the capillaries because they're too large to squeeze through the walls.
Pressure Power The filtration pressure difference is what drives the entire kidney filtration process - no pumps needed!
Selective reabsorption is your kidney's recycling system - it reclaims all the good stuff (glucose, amino acids, essential salts, and water) that got filtered out during ultrafiltration. No waste here!
The proximal tubule does the heavy lifting with its microvilli creating massive surface area for reabsorption. Active transport powered by loads of mitochondria recovers glucose, amino acids, proteins, vitamins, and hormones - basically anything valuable.
The distal convoluted tubule handles the fine-tuning. It secretes nasty stuff like toxins and drugs, pumps ions to control blood pH, and helps regulate blood volume (which affects urine concentration). It's quality control at its finest.
Efficiency Check Your kidneys reabsorb about 99% of the glucose and amino acids that get filtered - that's serious recycling!
Osmoregulation keeps your water and salt levels balanced using negative feedback - when something changes, your body triggers the opposite response to maintain dynamic equilibrium. It's like a biological thermostat.
ADH is the star player here. Made in your hypothalamus and released by your pituitary gland, it controls how permeable your collecting duct walls are to water. More ADH = more water reabsorption = concentrated urine.
When you're dehydrated, your brain detects low water in blood and releases ADH. This opens water channels in the collecting duct, allowing the low water potential in the medulla (created by the Loop of Henle) to pull water out by osmosis. No ADH means dilute urine and higher volume.
Feedback Loop This system constantly adjusts - drink loads of water and ADH drops, making you produce dilute urine to balance things out.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
13
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
simranjeey
@simranjeey_djsyzjrig
Your body is like a highly coordinated machine with multiple systems working together to keep you alive. The heart pumps blood around your body, your lungs help you breathe, and your kidneys filter waste - all working in perfect harmony... Show more
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Ever wondered how your heart manages to pump blood non-stop throughout your entire life? The cardiac cycle is basically your heart's rhythmic squeeze-and-release pattern that happens about 60-70 times every minute.
The cycle starts with atrial diastole - both atria (top chambers) relax and fill with blood from your body and lungs. Then the atria contract, forcing the atrioventricular valves open so blood flows into the ventricles below during ventricular diastole.
Next comes the powerful bit - ventricular systole. The ventricle walls contract hard, slamming the AV valves shut to prevent backflow, then forcing the semi-lunar valves open. This pushes blood into your pulmonary artery (to lungs) and aorta (to body). When pressure drops, those semi-lunar valves snap shut, and the whole cycle starts again.
Key Point: Remember that systole = contraction and diastole = relaxation - this will help you understand any heart-related exam questions!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Your cardiovascular system is essentially your body's transport network, delivery service, and security team all rolled into one. It's got three main jobs that keep you functioning properly.
Transport is the big one - your blood carries oxygen from lungs to tissues, glucose for energy, and removes carbon dioxide and waste products. Think of it like Amazon delivery, but for your cells.
The system also helps control body temperature by moving warm blood around and adjusting blood flow to your skin. Finally, it protects your body through blood cells and antibodies that fight infections, plus clotting factors that stop you bleeding out from cuts.
Remember: Your cardiovascular system is multitasking constantly - it's not just about moving blood around!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Breathing might seem automatic, but there's actually a clever mechanical process happening in your chest. Inspiration (breathing in) starts when your diaphragm contracts and flattens out, increasing the space in your chest cavity.
When you need more oxygen (like during exercise), your external intercostal muscles also contract, pulling your rib cage up and out. This creates lower pressure in your lungs compared to outside, so air rushes in naturally.
Expiration (breathing out) is mainly passive - elastic fibres in the alveoli shrink back, increasing pressure and squeezing air out. During exercise, your internal intercostals contract and abdominal muscles push your diaphragm back up to force more air out quickly.
Top Tip: The key is pressure differences - air always flows from high pressure to low pressure areas.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Your kidneys are like sophisticated water treatment plants that work 24/7 to keep your blood chemistry spot-on. They remove urea (toxic waste from protein breakdown) and control water, ion levels, and pH balance.
The renal arteries bring oxygenated blood to each kidney for processing, then the cleaned blood leaves via renal veins back to your heart through the vena cava. Each kidney has three main regions: the cortex (outer layer), medulla (middle), and renal pelvis (centre) that connects to the ureter.
Your ureters transport urine from kidneys to the bladder for storage. The sphincter muscle acts like a tap, controlling when urine is released through the urethra. It's a brilliant system that maintains your body's internal environment.
Did You Know: Your kidneys filter about 180 litres of fluid daily, but you only produce about 1-2 litres of urine!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Each kidney contains about one million tiny nephrons - these are the actual workhorses that produce urine. They're perfectly designed with loads of blood capillaries nearby for efficient filtering and processing.
The glomerulus and Bowman's capsule work together for initial blood filtration. The glomerulus lets small molecules like water, urea, and glucose pass through, but blocks large proteins and blood cells from entering the tubule system.
The proximal convoluted tubule is brilliant at reabsorption - it completely reclaims glucose, amino acids, and important ions like phosphate. Its walls are packed with microvilli (tiny projections) for maximum surface area, plus loads of mitochondria to power active transport.
Smart Design: The nephron's structure perfectly matches its function - every part is optimised for filtering and reabsorbing what your body needs.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The collecting duct is where your body fine-tunes how concentrated your urine becomes. It reabsorbs water by osmosis depending on how much your body needs - clever stuff that prevents dehydration or overhydration.
The Loop of Henle creates a brilliant concentration system in the kidney's medulla. It produces very high concentrations of solutes, creating extremely low water potential that allows maximum water reabsorption from the filtrate.
This complex network of blood vessels and tubules means most of that 180cm³ of daily filtrate gets returned to your blood. Only the waste and excess water becomes the 1-2 litres of urine you actually produce.
Amazing Fact: Your kidneys can produce urine that's either more or less concentrated than your blood plasma, depending on your body's needs.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The Loop of Henle is basically a salt gradient generator that gives your kidneys incredible control over water balance. This process, called osmoregulation, lets you produce either concentrated or dilute urine as needed.
Here's the clever bit: sodium and chloride ions actively transport out of the ascending limb, reducing water potential in surrounding tissue. Meanwhile, the ascending limb walls are impermeable to water, so the fluid loses salts but keeps its water.
This creates a concentration gradient that pulls water out of the descending limb by osmosis. Salts then diffuse into the descending limb from the concentrated tissue fluid, maintaining the gradient. It's like a biological desalination plant!
Key Concept: The countercurrent flow (opposite directions) in the loop multiplies the concentration effect, making this system incredibly efficient.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Ultrafiltration is your kidney's first step in cleaning blood - it's basically high-pressure filtering that pushes fluid from blood into Bowman's capsule. Think of it like a coffee filter, but for your bloodstream.
The glomerulus receives blood through the afferent arteriole and sends it out via the efferent arteriole. Here's the clever part - the afferent arteriole is wider than the efferent one, creating a traffic jam effect.
This diameter difference cranks up the blood pressure in glomerular capillaries, forcing fluid out into Bowman's capsule (which has much lower pressure). Blood cells and proteins stay in the capillaries because they're too large to squeeze through the walls.
Pressure Power: The filtration pressure difference is what drives the entire kidney filtration process - no pumps needed!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Selective reabsorption is your kidney's recycling system - it reclaims all the good stuff (glucose, amino acids, essential salts, and water) that got filtered out during ultrafiltration. No waste here!
The proximal tubule does the heavy lifting with its microvilli creating massive surface area for reabsorption. Active transport powered by loads of mitochondria recovers glucose, amino acids, proteins, vitamins, and hormones - basically anything valuable.
The distal convoluted tubule handles the fine-tuning. It secretes nasty stuff like toxins and drugs, pumps ions to control blood pH, and helps regulate blood volume (which affects urine concentration). It's quality control at its finest.
Efficiency Check: Your kidneys reabsorb about 99% of the glucose and amino acids that get filtered - that's serious recycling!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Osmoregulation keeps your water and salt levels balanced using negative feedback - when something changes, your body triggers the opposite response to maintain dynamic equilibrium. It's like a biological thermostat.
ADH is the star player here. Made in your hypothalamus and released by your pituitary gland, it controls how permeable your collecting duct walls are to water. More ADH = more water reabsorption = concentrated urine.
When you're dehydrated, your brain detects low water in blood and releases ADH. This opens water channels in the collecting duct, allowing the low water potential in the medulla (created by the Loop of Henle) to pull water out by osmosis. No ADH means dilute urine and higher volume.
Feedback Loop: This system constantly adjusts - drink loads of water and ADH drops, making you produce dilute urine to balance things out.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
13
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Sociology