It explains any subject step by step, follows your exam syllabus, and quizzes you until it sticks.
For every level: primary & middle school, high school (IGCSE, IB, AP), college & university. For every level: Primary (PSLE), Secondary (O/N-Level), JC & Polytechnic, University. For every level: elementary & middle school, high school (SAT, ACT, AP), college & university.
Opens in Telegram, a free, secure messaging app. Tap Start and ask your first question.
On a computer? Scan to open Rae on your phone.
Rae online
Differentiate the outside function, then multiply by the derivative of the inside:
Your turn. What's d/dx sin(2x)?
Exactly. The 2 comes from the inside's derivative. You've got the chain rule.
Getting answers is easy. Getting them checked, marked and remembered is harder.
| Capability | Rae | ChatGPT | Flashcard appCards |
|---|---|---|---|
| Getting answersthe easy part | |||
| Explains anything, step by step | Yes | Yes | No |
| Math, code & diagrams display properly | Yes | Yes | No |
| Built for your subjectnot a generic chatbot | |||
| Checks your working with a real math engine | Yes | Unverified | No |
| Marks essays like an examiner | Yes | Generic | No |
| Follows your official exam syllabus | Yes | Manual | No |
| Practice modelled on real exam questions | Yes | Made-up | Generic |
| Learning & rememberingwhere a tutor beats a chatbot | |||
| Remembers your notes & uploads | Yes | Partial | No |
| Turns your chats into notes | Yes | No | No |
| Turns your chats into a quiz | Yes | No | Manual |
| Reviews them at just the right time | Yes | No | Yes |
| Tracks your mastery, focuses your practice | Yes | No | No |
ChatGPT hands you an unchecked answer and forgets it. Rae checks the working, grades it honestly, and stays with you until you've mastered it.
What are you studying? Pick a subject to see what Rae does for it.
…and anything else you study. Rae adapts to any subject.
From your first spelling list to your final-year essays, Rae follows the official syllabus for your level, pitching the depth, the exam style and the feedback to exactly where you are.
Reading, writing and maths explained in plain words, with the working shown step by step and numbers kept simple.PSLE composition and comprehension, oral practice, and maths with the working shown in plain words.Reading, writing and math explained in plain words, with the working shown step by step and numbers kept simple.
Real, specific feedback on IGCSE, IB and AP-style essays, with maths and science working checked step by step.Real, specific feedback on O- and N-Level essays, with maths and science working checked step by step.Real, specific feedback on SAT, ACT and AP-style essays, with math and science working checked step by step.
IB, AP and A-Level depth: maths and sciences at full rigour, and essays that are argued and evaluated, not just described.A-Level rigour for JC (H1/H2 maths, sciences and GP essays), plus applied, coursework-and-project help for poly diplomas.AP and SAT depth: AP Calculus and sciences at full rigour, and AP English and history essays that are argued and evaluated, not just described.
Academic writing, formal notation and proofs, pitched at degree level and grounded in real sources with citations that check out.
Heading overseas? Rae also preps you for the SAT, ACT, AP and IB. Set your target exams in the app and every answer follows.
Rae turns your questions into notes, practice and honest feedback, so the work you put in adds up.
Type it, say it in a voice note, take a photo of the problem, or attach the file.
Send an essay or a photo of your working. Rae grades it the way an examiner would and points to the first step that went wrong.
Practice questions modelled on real exam papers for your subject, and a full mock paper when you're ready to test yourself.
Every explanation becomes a clean note, filed by subject and topic, and kept up to date as your understanding grows.
Your questions return exactly when you're about to forget them, with a nudge only when something's due.
Turn your notes into a podcast for the bus ride, or ask Rae for your work as a PDF, Word or Excel file.
Rae lives inside Telegram, so it just works on your phone and the desktop app. One account; your chats, notes and progress stay in sync across both.
Rae online
No setup, no syllabus to upload. Rae already knows yours. Just start a conversation.
Tap the button, hit Start, and say what you're studying.
Type a question, send a photo of a problem, or paste in your notes.
Get clear explanations, then practice with cards Rae makes for you.
Ask Rae things like…
You don't have to know the learning science. Rae just does it, every session.
Start free. Upgrade when you want more usage and room to spare.
Start free, no card required · Cancel anytime · Manage billing in the app
Schools: $139/student/year (30% off Pro), 10-seat minimum. Contact us in the app
ChatGPT answers a question and forgets it. Rae remembers what you're studying and builds on it. Your working gets checked, your essays get graded properly, and every answer follows the official syllabus for your level and exam. Each session turns into notes and quiz questions that come back at the right time, so what you learn actually stays learned.
Rae is built to be honest: it flags when it's unsure, separates settled fact from interpretation, and shows its working so you can follow along. In maths and the sciences, every line of working is re-computed by software before you see a ✓, and factual answers cite real sources. Spot an answer that looks off? One tap runs an independent check and corrects it in place.
Yes. Rae adapts its language and tone to your age, keeps everything age-appropriate, and declines anything unsafe. It's a calm, supportive tutor, with no manipulative streaks or engagement tricks, because we optimise for you learning and getting on with your day.
You're in control. Rae keeps only what it needs to tutor you well (your questions, notes and progress), and we never run ads or sell your data. Payments go straight to Stripe, so your card details never touch our servers, and everything is encrypted in transit. Want it gone? Ask Rae to delete your data anytime. The full details are in our Privacy Policy.
Just about anything you study: maths and the sciences, English and Chinese (essays, comprehension and oral practice), Literature, History, Geography, General Paper, economics, accounting, coding, music and more. Pick your subject to see what Rae does for it. Essay subjects get proper grading, and math, chemistry, code and diagrams all display the way your textbook prints them.
Every stage, from primary and middle school through high school (including IGCSE, IB and AP) to college, university and adult learners. Tell Rae your level once and every answer, essay mark and practice question follows the official syllabus for it.
Every stage, from primary school (PSLE) through Secondary (O- and N-Level), JC (A-Level, H1/H2) and Polytechnic to university and adult learners. Tell Rae your level once and every answer, essay mark and practice question follows the official syllabus for it.
Every stage, from elementary and middle school through high school (including SAT, ACT and AP) to college, university and adult learners. Tell Rae your level once and every answer, essay mark and practice question follows the official syllabus for it.
Tell Rae your exam once and it keeps score for you. The Progress tab shows how much of your syllabus you've covered and gives you a short plan for today. Practice questions are modelled on real past papers for your subject, and when you want the full experience, Rae builds you a complete mock paper. Notes you upload count toward your coverage too.
No. Rae lives inside Telegram, an app you may already have. Open the chat and start. There's no separate app to download and no account to create.
Yes. You get a free allowance to try Rae out, with no card needed. Paid plans add generous daily usage and room to spare, and you can cancel anytime from the in-app billing portal.
Rae lives inside Telegram, a free, secure messaging app. Install it first (it takes a minute), then open Rae.
Free to start. No account. Open Telegram, ask your first question, and learn something today.
Start free in Telegram
On a computer? Scan to open Rae on your phone.