FeynmanFSRS Pro
One fair price, once. Subscriptions are for ongoing service, not for software — so the core is free forever, and Pro is a single purchase.
Accounts are free, and so is the whole core — Pro is optional.
What Pro adds
Full explanation history
The complete timeline on every card — watch yourself get clearer, month over month. Free keeps the most recent explanation.
Import from Anki (BETA)
Bring an .apkg deck; AI turns your cards into explain-prompts with references and key points — you review every card before it saves.
Future-progress simulator
Project 30–365 days from your real FSRS state — workload, minutes per day, stable-knowledge growth. Compare up to three scenarios, seeded with your measured Again rate.
Exam mode
Set a test date per deck — nothing schedules past it, and the deck shows predicted recall on the day.
Themes
Light, dark, paper, slate, forest.
Advanced stats
Hardest cards, per-deck retention, and time-per-card.
Free, forever, honestly
- Decks, explanation cards, self-grading, FSRS scheduling
- The review screen, voice input, focus mode, keyboard shortcuts, undo
- Catch-up (spread a due pile) and study-ahead (pull cards forward)
- The hub: share, copy, like, comment
- Import & export — JSON (full fidelity), Markdown, CSV. Forever.
Student without the budget? The scholarship path is real: ask, and Pro is free. AI credits (reference generation, “what did I miss?”) will be metered separately at cost plus a small margin — writing your own references stays free and is often better practice anyway. Questions? Start with the guide.