Fox Cards
You build your own decks and Fox Cards tells you which cards to review today: the review schedule uses the FSRS algorithm, so you remember vocabulary, dates and formulas for longer. The fox keeps the schedule; you just study.
Reviews at the right time
The FSRS algorithm decides when each card comes back: cards you know return less often, harder ones more often. Rate yourself with one tap: Again, Hard, Good, Easy.
Four ways to study
Flip the card, rate yourself, answer multiple choice or type the answer: you choose how to review.
Your decks, your way
Decks with a name, description and color, in folders and subfolders. Put a photo or a PDF on the front or back of a card: maps, formulas, sheet music.
See your progress
Streak of consecutive study days, heatmap of your review days, share of correct answers and stats deck by deck.
Goal and reminders
Choose how many cards to study each day and set the times and days of your reminders — say, morning and evening.
No account
No sign-up and no email: your decks stay on your phone.
How it works
Three steps, five minutes a day.
Build your decks
Write the front and back of your cards and add a photo or a PDF if you need one. Or pick a ready-made deck from the Shop.
Study and rate yourself
Review the way you like and, once you see the answer, tap to say how easy it was.
Come back when it counts
The app works out the next review for every card, and reminders nudge you to study at the times you pick.
Free, no subscription
All of the studying is free. Purchases are one-time, and any purchase removes ads for good.
Free
Everything you need to study
- FSRS reviews and four ways to study
- Folders, photos and PDFs on cards
- Stats, daily goal and reminders
- 5 color themes, light and dark
- One ad at the start of a session, two a day at most
One-time purchases
Pay once, only for what you want
- 6 extra color themes
- Ready-made Shop decks, checked by hand
- Free updates to the decks you bought
- Ad removal
- Any purchase removes ads for good
Five minutes a day is enough
Fox Cards is for Android. Free to download, no subscription.
Google Play ↗