Your AI examiner for every exam.
For GCSE, IGCSE, A-Level, IB and MYP. Learn every topic step by step with Drago, then get every answer marked against your exam board’s mark scheme, in seconds.
No card needed · Then $99 a year, every subject included
AQA GCSE Biology · Enzymes · 6 marks
Explain why the rate of reaction falls when the enzyme is heated above 50 °C.
Your answer
“The enzyme denatures and the active site changes shape, so it stops working properly.”
What's right — you named denaturing and the active site changing shape. That's 2 marks.
What went wrong — “stops working properly” is too vague. The scheme wants the effect on the substrate.
Write instead — “the substrate can no longer bind to the active site”. That is both missing marks.
5,000+
Students practising
5 qualifications
GCSE, IGCSE, A-Level, IB, MYP
5 exam boards
AQA · Edexcel · Cambridge · Oxford AQA · IB
Marked instantly
Seconds, not weeks
Find your course.
Pick your qualification. Everything follows your exam board’s specification.
Lessons that teach you, a step at a time.
Every subtopic on your specification is a short lesson, with Drago beside you the whole way.
- 1One small step at a timeThe notes come in bite-sized pieces. Press Next when a piece makes sense.
- 2Flashcards straight afterSay the answer in your head, flip, and see what stuck.
- 3The whole subtopic on one pageA mind map joins it all up before you move on.
- 4A quick quiz to lock it inThen the next lesson is one tap away.
New idea: the active site. Picture a lock and its key.
Enzymes
The active site
Every enzyme has an active site shaped to fit one substrate, like a key in a lock.
Heat it past 50 °C and the shape is lost. The substrate can no longer fit.
Practise. Get marked. Improve.
Every mark explained, and the words that would have earned the ones you missed.
Your question
6 marksExplain why the rate of reaction falls when the enzyme is heated above 50 °C.
Your answer
The enzyme denatures and the active site changes shape, so it stops working
Two ways to test yourself.
Every subtopic and every topic has its own test. Take it the way that suits you today.
Question by question
Answer one at a time and each answer is marked the moment you hand it in. Stuck? Ask Drago for a hint.
Exam mode
The whole paper, timed like the real exam. Hand it in and every mark is explained.
Type it. Write it. Snap it.
Answer in words, proper maths, handwriting or a photo. Each is marked the same way.
Type
Words, as fast as you think them.
Maths
Fractions, powers and roots, as on the paper.
Write by hand
Pen on a tablet, working and all.
Photo of paper
Snap the page in your book.
GCSE Maths · Percentages · 2 marks
A coffee costs £2.20. The price goes up by 10%. Work out the new price.
What we read, and marked
Check what we read before it's marked.
Built for chemistry, physics and maths, symbols and all.
- H₂SO₄
- Fe³⁺
- x²
- ½
- √x
- →
- ⇌
- ≥
- ×10⁻³
What actually happens to your answer.
Your board publishes how every mark is earned. Exaim marks against it, and only one step uses AI.
- Written answers, not just multiple choice
- The exact wording that would have earned the mark
- 01
Your answer
Typed, handwritten or a photo
- 02
Your board’s mark scheme
AQA, Edexcel, Cambridge, Oxford AQA, IB
- 03
Point-by-point check
The only AI step
- 04
Marks, with reasons
Awarded or refused, one point at a time
- 05
Your plan updates
Dropped marks become scheduled practice
A mark scheme is a list of things you either said or did not say.
Marking it point by point shows you which one you missed. In schools, a teacher confirms or corrects every mark first.
Meet Drago.
Your study buddy. He teaches the lessons and is there whenever you’re stuck.
Knows the page you’re on
Ask about the notes, a flashcard or a question you just got marked, and he already has it in front of him.
Hints, not answers
On a test you’re sitting he nudges you towards the mark. The full answer comes after it’s marked.
Safe for students
He stays on schoolwork, never asks for personal details, and chats are deleted after 30 days. If a message suggests a student may need help, a person on our team is told.
Never wonder what to revise.
Your plan reorders itself as you work. The topic costing you most marks is always next.
Analytics
Biology · by topic
- Enzymes86%
- Cell transport74%
- Genetics41%
Genetics is costing you the most marks.
See where you’re losing marks
Planner
Today’s plan
- Genetics — read the notes10 min
- 10 flashcards6 min
- 1 exam question · 6 marks8 min
Built around your exam dates
Streak
4 daysYour week
4
days in
a row
Build a revision habit
Pods
3 membersGCSE Biology gang
- SSarah12 flashcards2m ago
- AAdam5 / 6 on Enzymes1h ago
- You7-day streaktoday
Revise with friends towards a weekly goal
Does it actually work? Here’s the evidence.
Every figure says exactly what it counts.
We don’t claim Exaim raises final grades. That needs a controlled study we haven’t run.
Built by people who marked these papers.
Our founders, Imperial, UCL and LSE graduates, have run an exam prep institute for close to a decade and marked thousands of scripts by hand.
Students rarely lose marks for not knowing the topic. They lose them when an answer stops a step early or misses the word the scheme credits.
Marks are won on technique, and technique is teachable once someone marks your work.
Read how the marking works
Shaun Daswani
Co-founder
Imperial · UCL
Jason Daswani
Co-founder
LSE
Mohammad Shayan
Co-founder · CTO
University of Greater Manchester
Iqbal Munshi
Advisor
GEMS Education · 25 years
“Exaim is an exceptional tool with a user-friendly interface and detailed feedback system. It has significantly enhanced my teaching process, especially with the IGCSE Edexcel syllabuses.”
Steve Porter
Teacher of Business & Economics
Tanglin Trust School
“The feature that allows students to answer questions and receive instant feedback is a game-changer, pushing them to higher levels of understanding.”
Vanessa North-Panting
Head of Digital Learning & Innovation
Charterhouse
Study on your own. Or bring the whole class.
The same practice and marking, at home or across a year group.
For parents
The four hours a tutor spends marking thirty papers, in seconds.
Every answer marked against the board’s scheme, and every dropped mark turned into practice. Work is stored encrypted in the EU and never trains anyone else’s AI.
- $99 a year
- Every subject your child takes, one price
- No card to trial
- Seven days free, cancel any time
- UK GDPR
- ICO registration ZB842876
- Not for coursework
- Nothing in it writes work they hand in
Try Exaim free for 7 days.
Start with a question you think you got right. Then $9.99 a month or $99 a year.
- No card needed
- Cancel any time
- Every subject you take