Any subject
Decks across everything you study
Languages, science, history, math facts — one app holds every deck, so review is a single daily visit instead of five scattered ones.
Live now — start free
Memory that sticks.
Spaced-repetition decks across subjects — each card returns exactly when you're about to forget it.
What is Koydo Flashcards?
Koydo Flashcards is the memory app in the Koydo portfolio. It builds spaced-repetition decks across subjects — vocabulary, science terms, dates, formulas, anything worth keeping — and schedules each card to return right before it would slip away. Cards you find hard appear more often; cards you have mastered retire quietly, so daily review stays short and honest. Decks connect to the rest of a learner's Koydo work, which means the things studied elsewhere can become cards without retyping them. Flashcards is built by KOYDO LLC, the family learning company, and follows the same rules as every Koydo app: ad-free, age-aware, and designed for steady habits over cramming. The app is live at flashcards.koydo.app; create a free Koydo account to start.
Spaced repetitionThe right card at the right momentIntervals stretch as memory strengthens — review effort goes only where it's needed.
The schedule is the secret
Review lands right before forgetting
Spaced repetition spaces each card by how well you actually know it. Five focused minutes a day outperform an hour of rereading.
It learns you
Reviews that keep pace with you
Miss a card and it comes back sooner; nail it and it waits longer. Daily reviews stay short and honest — focused only on what you need right now.
Part of one Koydo membership
Flashcards belongs to the Koydo portfolio of learning apps. See what a Koydo plan covers across programs, apps, and exam prep.
Remember this one thing
Create a free account and start your first deck on Koydo Flashcards today.
Start free