Built by an IGCSE student, for IGCSE students

Revision that sticks
not just looks pretty

Spaced repetition that actually works. Type-to-recall that's honest. AI mock exams marked like a real examiner. Your decks sync across every device — free to start, no card limits, no ads.

No credit card. Works offline once loaded. Install as an app from your browser.

Cards & decks
0 Study modes
0 Ads, ever
0% Free to start

Try it right now — no sign-up

This is Type-to-Recall, the mode that actually makes things stick. Type an answer and see how forgiving the marking is.

Biology Card 1 of 5

Everything you need to revise smarter

Designed for the way your brain actually forgets things — and built for the messy reality of revision two weeks before exams.

AI mock exams

Sit a full paper written in real exam-board style, then get it marked like an examiner — partial credit, mark schemes, and feedback on exactly what to fix.

AI card generation

Describe what you want — "Edexcel Physics: waves, short answers, 2 calculations" — and get a deck in seconds. Or paste your notes or a PDF and turn them into cards.

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Share & discover decks

Share any deck with a link or QR code — friends can try it before they even sign up. Or browse free decks made by other students.

Spaced repetition

Cards you got right come back later. Cards you missed come back sooner. The schedule does the work, you just show up daily.

Type-to-recall

No pretending. Type the answer, get graded against the real one. Smart enough to know "nominative, vocative, accusative…" in any order.

Star hard cards

Mark anything you keep getting wrong, then filter sessions to "starred only" until it sticks.

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Streaks & XP

One card a day keeps the streak alive. Earn XP, climb levels, and compete on the leaderboard with friends.

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Activity heatmap

See your last 12 weeks at a glance — every cell a day. Spot the patches where you slacked off (we won't tell anyone).

Cloud sync

One account, every device. Start on your laptop, finish on your phone on the bus home.

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Image cards

Paste a diagram, map, or photo straight into a card. Built for biology, geography, and chemistry diagrams.

Undo + override

Fat-fingered a "missed"? Hit U. Got the answer right in a different way? Override the grade. The app trusts you.

Loads instantly

Built on Cloudflare's edge network. Milliseconds from anywhere. Works offline after your first visit.

Three study modes, one library

Each mode targets a different stage of learning. Use Flashcards to cover ground, Type-to-Recall to test depth, Quiz to drill before the exam.

MODE 01

Flashcards

Classic flip cards. Self-grade with Got it / Missed. Best for first-pass coverage of a new topic.

MODE 02

Type-to-Recall

Type the answer from memory. Brutal but honest — the only way to know you actually remember it.

MODE 03

Quiz

10 multiple-choice questions per round. Distractors pulled from your real deck for exam-style pressure.

Simple pricing

Free forever for solo students. Pro unlocks every limit — and while payments are still being set up, you can unlock all of it with a free trial. Team shares one account across up to 5 devices.

Payments coming soon — for now, start a free trial and use everything (Mock Exams, AI generation, the lot) free. No card needed.
Free
£0/forever

Everything you need to actually revise. No card limits, no ads, no credit card.

  • Unlimited decks & cards
  • All 3 study modes
  • Spaced repetition + streaks
  • Cloud sync across devices
  • Image attachments (10 cards)
  • Activity heatmap (last 30 days)
  • Export your data anytime
Start free
Team
£8/month
£65/year save 32%

Up to 5 devices on one account — for study groups, families, or siblings sharing a subscription.

  • Everything in Pro, for everyone
  • Up to 5 devices / users
  • Shared deck library
  • Teams leaderboard (compete as a group)
  • Group exam countdown
  • Public deck publishing
  • One person manages billing
Start free trial
No card needed · payments coming soon

£1.60/device/month at 5 devices — once payments open.

Full comparison

Feature Free Pro Team
Unlimited decks & cards
All 3 study modes
Spaced repetition + streaks
Cloud sync
Image attachments10 cardsUnlimitedUnlimited
Activity heatmap30 daysFull historyFull history
AI mock exams (written + marked)1 free
Predicted exam grade (1-9)
AI card generation (text / PDF)taste
AI "why was I wrong?"taste
OCR textbook → cards
Mock exam mode
Mastery analytics per topic
Audio cards (text-to-speech)
Smart study planner
Pomodoro study sessions
Custom themes
Export to PDF / Anki
Family plan (parent oversight)
Public deck publishing
Up to 5 devices sharing
Shared deck library
Teams leaderboard
Group exam countdown
Priority email support

Frequently asked

Honest answers, no marketing fluff.

Yes, genuinely free. The whole app (every study mode, cloud sync, streaks, the heatmap, search, etc.) is free forever for solo students. Pro adds AI mock exams, AI card generation and bigger limits — paid plans are coming soon, but right now you can unlock all of it with a free trial, no card needed. The free tier won't get worse when Pro launches.

Mock exams are written and marked by advanced AI (Claude) against a proper mark scheme, so it awards partial credit and gives examiner-style feedback. It's deliberately generous — it accepts correct answers in any wording, treats equivalent notation as the same (m/s² = m/s^2), and ignores spelling. It's a brilliant guide for "did I make the key points?", but it isn't an official examiner, so sanity-check anything borderline against your spec.

Yes — it's a Progressive Web App, so you can install it from your browser onto iOS or Android and it behaves like a real app. Open the app in your phone's browser, then use "Add to Home Screen" (iOS Safari) or "Install app" (Android Chrome).

Nothing — it stays in your account waiting for you. You can also export everything as a JSON file from Profile → Export data. Or delete the account entirely from Profile → Delete account; that wipes every trace of your data from our servers.

Realistic answer: this is a personal project, so nothing's forever. That's why the export-to-JSON feature exists — back up your decks every now and then and you'll never be stuck. If we ever did sunset the service, we'd give plenty of warning.

If those work for you, great — keep using them. Zelinx exists because Quizlet keeps locking core features behind paywalls, and Anki has the steepest learning curve in software. Zelinx is the middle ground: spaced repetition that actually works, UX that doesn't fight you, and pricing that respects students.

Currently: IGCSE Physics, Chemistry, Biology, Maths, Economics, Further Maths, Latin (vocabulary + grammar), and Spanish. ~800 cards total, all hand-curated for the Edexcel syllabus. You can also build your own from scratch — most cards take 30 seconds to make.

Ready to actually remember this stuff?

Free to start, no card limits, no ads, no credit card. Works on any device with a browser.

Start studying