Ask anything. Learn faster. Remember longer.
It explains any subject step by step, learns what you need most, 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.
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 |
| Tuned to your level & exam format | Yes | Manual | No |
| 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 verifies the working, marks it like an examiner, 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 pitches 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.
IGCSE, IB and AP-style essays marked like an examiner, with maths and science working checked step by step.O- and N-Level essays marked like an examiner, with maths 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.
Academic writing, formal notation and proofs, pitched at degree level and grounded in real sources with citations that check out.
Every answer becomes something you keep, like a quiz, a note, or a podcast episode.
Essays marked like an examiner; crisp math, code, diagrams and chemistry, not walls of plain text.
Type it, say it in a voice note, take a photo of the problem, or attach the file.
Your questions come back exactly when you need them, with a nudge only when something's due.
Every explanation saved as a clean, searchable note, organised by subject.
Pick a topic and a voice. Rae records a ~10-minute episode from what you've been studying, and it evolves as you learn.
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. 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 is a study system built per subject: maths and science working is checked step by step by a real math engine, essays are marked like an examiner, and everything is pitched to your level and exam. It remembers what you're working on, turns your sessions into quizzes, and brings them back at just the right time, tracking what you've mastered as you go.
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 the working is checked by a real math engine, and you only see a ✓ when it's verified. Factual answers can 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. Essays are marked like an examiner, and math, chemistry, code and diagrams all show up cleanly, never as walls of plain text.
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 is pitched right there.
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 is pitched right there.
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.
There's a genuinely useful free tier, so try Rae before you pay a cent. Paid plans add generous daily usage and room to spare, plus podcasts (your topics as listenable episodes), 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.