Spaced repetition that actually works. Type-to-recall that's honest. Quizzes that drill before the exam. 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.
Designed for the way your brain actually forgets things — and built for the messy reality of revision two weeks before exams.
Cards you got right come back later. Cards you missed come back sooner. The schedule does the work, you just show up daily.
No pretending. Type the answer, get graded against the real one. Smart enough to know "nominative, vocative, accusative…" in any order.
Mark anything you keep getting wrong, then filter sessions to "starred only" until it sticks.
One card a day keeps the streak alive. Earn XP, climb levels, and compete on the leaderboard with friends.
See your last 12 weeks at a glance — every cell a day. Spot the patches where you slacked off (we won't tell anyone).
One account, every device. Start on your laptop, finish on your phone on the bus home.
Paste a diagram, map, or photo straight into a card. Built for biology, geography, and chemistry diagrams.
Fat-fingered a "missed"? Hit U. Got the answer right in a different way? Override the grade. The app trusts you.
Built on Cloudflare's edge network. Milliseconds from anywhere. Works offline after your first visit.
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.
Flashcards
Classic flip cards. Self-grade with Got it / Missed. Best for first-pass coverage of a new topic.
Type-to-Recall
Type the answer from memory. Brutal but honest — the only way to know you actually remember it.
Quiz
10 multiple-choice questions per round. Distractors pulled from your real deck for exam-style pressure.
Free forever for solo students. Pro unlocks every limit (pay monthly, yearly, or once). Team shares one account across up to 5 devices.
Everything you need to actually revise. No card limits, no ads, no credit card.
For serious revisers. Mock exams, mastery analytics, audio cards, and every limit removed.
Lifetime limited to the first 100 sign-ups.
Up to 5 devices on one account — for study groups, families, or siblings sharing a subscription.
£1.60/device/month at 5 devices.
| Feature | Free | Pro | Team |
|---|---|---|---|
| Unlimited decks & cards | ✓ | ✓ | ✓ |
| All 3 study modes | ✓ | ✓ | ✓ |
| Spaced repetition + streaks | ✓ | ✓ | ✓ |
| Cloud sync | ✓ | ✓ | ✓ |
| Image attachments | 10 cards | Unlimited | Unlimited |
| Activity heatmap | 30 days | Full history | Full history |
| Mock exam mode | — | ✓ | ✓ |
| Mastery analytics per topic | — | ✓ | ✓ |
| Audio cards (text-to-speech) | — | ✓ | ✓ |
| Smart study planner | — | ✓ | ✓ |
| Pomodoro study sessions | — | ✓ | ✓ |
| Custom themes | — | ✓ | ✓ |
| Export to PDF / Anki | — | ✓ | ✓ |
| AI grading + card generation | — | soon | soon |
| OCR textbook → cards | — | soon | soon |
| Up to 5 devices sharing | — | — | ✓ |
| Shared deck library | — | — | ✓ |
| Group challenges + leaderboard | — | — | ✓ |
| Group exam countdown | — | — | ✓ |
| Parent / tutor view | — | — | soon |
| Priority email support | — | ✓ | ✓ |
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 is a future paid tier that adds AI features and bigger limits — but the free tier won't get worse when Pro launches.
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.
Free to start, no card limits, no ads, no credit card. Works on any device with a browser.
Start studying →