FernDeck: Flashcard Study

Make a deck. Review what's due. Remember it next month, not just tonight.

FernDeck is a flashcard app that decides for you when each card should come back. Cards you find easy drift further apart; cards you keep missing return the next day. That's spaced repetition, and it's the difference between cramming and actually keeping something.

BUILD DECKS FOR ANYTHING
• A language you're learning, vocabulary and phrases
• An exam, a certification, a course
• Anatomy, formulas, case law, code syntax
• Names and faces, recipes, a hobby you're getting serious about
Give each deck a name and an emoji. Add as many cards as you like, front and back, in your own words.

REVIEW THAT ADAPTS TO YOU
Study only the cards that are due today. Look at the front, try to recall it, reveal the answer, and rate yourself honestly: Again, Hard, Good, or Easy. FernDeck adjusts each card's interval and difficulty from your answer, so easy cards stop wasting your time and hard cards get the repetition they need.

KNOW WHAT'S WAITING
The home-screen widget shows the deck with the most cards ready and how many are due, so you can start a session straight from your wallpaper. An optional daily reminder tells you when cards actually come due — and stays quiet when they don't.

EVERYTHING IS FREE
Unlimited decks, unlimited cards, the full review scheduler, the widget and reminders. No paid tier, no trial, no card limit, and no subscription. Nothing is held back.

YOUR CARDS STAY YOURS
FernDeck has no account and no sign-up. Your decks and cards are stored on your phone and never sent to us — there is no server holding what you're studying. No ads, no analytics, no tracking code. The app works fully offline; the only network use is Google Play billing, and only if you choose to leave a tip.

IF IT EARNS IT
There's an optional tip jar for anyone who wants to support a small independent developer. Tipping unlocks nothing, because there is nothing to unlock — every feature is already yours. It just helps keep the updates coming.

Small sessions, spaced out. That's the whole trick.

Recent changes:
First release. Build unlimited decks of flashcards and review the ones that are due with built-in spaced repetition — rate each card Again, Hard, Good or Easy and FernDeck schedules when it should come back. Includes a home-screen widget showing what's ready to review and an optional daily reminder that stays quiet when nothing is due. No account, no ads, works offline. Every feature free.