Frequently asked questions

You upload your own study materials — PDFs, DOC/DOCX, TXT, or photos of handwritten pages. Recall's AI extracts every concept, definition, formula, date, and relationship (each linked back to the page it came from), then builds eight study games, flashcards, and a tutor around them. One mastery model tracks every answer across every game.

Yes — photos of handwritten pages are transcribed with vision AI before extraction. Clear handwriting on decent photos works best.

Rapid Recall (fast drills with confidence stakes), Knowledge Sprint (5 timed minutes), Concept Match (pair terms and meanings), Connection Map (rebuild how concepts link), Peer Review (tutor a virtual study buddy and catch their errors), Summit (a survival climb with lives), Exam Mode (real conditions, full review after), and Case Study (apply concepts to an AI-written scenario).

Every answer feeds one per-concept score that moves through New → Weak → Learning → Strong → Mastered. It uses spaced repetition (recall at the right moment counts more), confidence calibration (confidently-wrong answers get flagged as misconceptions), and a forgetting curve that decays scores between sessions so stale knowledge resurfaces.

Yes. The companion app has all eight games, uploads from your phone, flashcards, concepts, progress, and the tutor — synced to the same account, streak, and mastery as the web.

Yes — and you should assume it sometimes is. Extraction can misread a document, grading can miss a valid phrasing (that's why typed answers let you self-assess), and tutor answers or exam predictions can be off. Treat everything AI-generated as a study aid to verify against your own notes and instructors, not as a source of truth. The Terms spell this out.

No. Predictions are the AI's best guess at what's test-worthy in your materials — useful for prioritizing, never a promise about any real exam.

On purpose. Roughly half of Sam's claims are subtly corrupted, and catching + fixing errors is a researched study technique (erroneous-example learning plus the protégé effect). The reveal always shows the accurate version with its source.

Pick any plan and you get 3 days with its full credit allowance before the first charge. A payment method is collected at signup; cancel from Settings before the trial ends and you pay nothing.

Only the moments AI does heavy lifting: processing a document (5 credits), a tutor answer (1), generating a flashcard deck (3), predicting exam questions (5), writing concept review notes (2), or building a case-study scenario (3). Playing the games is unlimited on every plan — sessions are precomputed and never call the AI mid-game.

Nothing you've built goes away. Every game, your flashcards, concepts, and progress keep working — you just can't process new documents or ask the tutor until your allowance resets at the next billing cycle or you upgrade.

No — allowances reset each billing month.

Anytime, from the billing portal in Settings. You keep your plan until the period you paid for ends. Your data stays either way — AI features just pause until you resubscribe.

By Stripe. Checkout and the billing portal are Stripe-hosted, so your card details never touch our servers.

You. Every query is scoped to your account, uploads are stored privately under unguessable keys, and we don't sell your data or use it for advertising.

No. AI processing runs through provider API terms that don't allow training on your content, and we don't train models on it either.

Yes — individual documents, whole study sets, or your entire account. Details are in the Privacy Policy.