Forget forgetting. — Recall: the free spaced repetition and flashcard app that helps students and professionals remember what they study, using the science of the forgetting curve.

Spaced repetition is a learning technique that schedules reviews at widening intervals. Instead of cramming, you revisit material right before you'd forget it, which is what strengthens long-term memory. Decades of research find it substantially outperforms massed practice. Recall runs that schedule for every card you save, so you never have to work out when to review.

The forgetting curve, discovered by Hermann Ebbinghaus in 1885, shows that without review you lose roughly 80% of new information within a week — most of it in the first 24 hours. Recall models that curve for every card and resurfaces the card just before it fades, so the slope flattens with each review instead of falling away.

Recall is free, has no ads, and currently has no paywall anywhere in the app. That covers the whole spaced-revision engine, your buckets and notes, Recall Drops, the insights dashboard, and asking or summarising your own notes with Aura. A Premium plan will arrive later for the heavier things — the larger AI models and quiz — and anything that is ever limited is always shown to you inside the app.

Recall is built to be calm where most flashcard apps are demanding. The design is monochrome, with colour reserved for small priority chips — no alarming red numbers. One quiet ring replaces the score counter. Recall Drops are gentle haptic nudges rather than badge spam, and you choose how insistent they are. Insights read as a private ledger, not a leaderboard. And Aura answers questions about the notes you've already saved instead of pushing generated content at you.

Recall is for anyone who wants to remember what they learn. Students use it for exam preparation across biology, statistics, languages, and finance. Professionals use it for certifications and technical knowledge. Language learners use it for vocabulary. Medical students use it for pharmacology and anatomy. If you read something important and don't want to forget it, Recall is for you.

Aura works on the notes you have already saved, rather than writing new material for you. It summarises a whole bucket, answers questions about your own material and shows which notes the answer came from, and suggests clearer rewrites of a note you're editing. Answers are grounded in your notes first; if your notes don't cover something, Aura falls back on general knowledge rather than inventing a citation. It does not browse the web. You can also tell Aura how you like answers written, and it remembers that for you.

Recall is available on Android through Google Play. An iOS version for iPhone and iPad is in progress. Reviews work offline — your cards are cached on the device and anything you review while disconnected syncs the moment you're back online.