Flashcards: Memory Trainer

Remember longer and study less. Flashcards: Memory Trainer uses FSRS, a modern spaced repetition algorithm, to schedule each card shortly before you would forget it. Every rating button shows the estimated next interval, so you can see what each answer does.

YOUR OWN DECKS
- Front and back cards, with an option to create the reverse card too
- Cloze cards: hide words in a sentence and practise recalling them
- Tags, extra notes and search across all your decks
- Import cards from CSV or TSV files
- Choose how you answer: flip the card, type the answer, multiple choice or true/false

CARD GENERATORS THAT NEVER RUN OUT
Cards are generated fresh every time, with difficulty levels that rise as you answer correctly.
- Graded arithmetic, times tables, Roman numerals
- Fractions, decimals and percentages
- Squares and roots, prime numbers
- Binary and hexadecimal
- Unit conversions
- Day of the week for any date

FACT DECKS
- World capitals, in both directions
- The periodic table: 118 elements with symbol, name and atomic number
Add a fact deck to spaced repetition so the facts stick in long-term memory.

PROGRESS AND HABITS
- Daily goal, streaks and achievements
- Activity heatmap, due forecast, retention and study time statistics
- Set the number of new cards per day and your target retention
- Optional daily review reminder
- Home screen widget showing the cards due today, and a Quick Settings tile that opens the app

BUILT FOR PRIVACY
- Your decks, cards and study history are stored on your device
- Cards and study sessions work offline; the internet is used for ads and subscriptions
- No account is needed

APP LANGUAGES
Malay, English, Indonesian and Arabic, with right-to-left layout support.

ADS AND PRIMUS PLUS
The app shows ads. Primus Plus is an optional subscription, billed monthly or yearly through Google Play, and you can cancel it at any time in Google Play. It unlocks:
- More than 3 decks of your own
- All card generators and the fact decks (without Plus, arithmetic, times tables and Roman numerals are available)
- Advanced statistics: yearly heatmap, 30-day forecast, retention
- Backup, restore and CSV export
- Exclusive themes and no ads
You can also leave an optional one-time tip from the About screen. Signing in with Google is optional and only used so your Plus subscription can follow your Google account to other devices.

Developed by Primus Creative Hub. Questions: founder@primuscreative.com

Recent changes:
Stability and performance improvements, bug fixes and a cleaner ad experience.