For Duolingo learners

Remember what Duolingo taught you.

Spaced-repetition flashcards built from your Duolingo course vocabulary.

Coming soon to theApp Store
iPhone · Free with one banner ad
Racki review screen showing a Japanese flashcard with romaji and meaning
Why Racki

The review tool Duolingo doesn't have.

Racki browse screen listing course sections with enabled word counts

Built from your course

Enable the sections you've finished and review just those words — nothing you haven't learned yet.

Racki review prompt showing the JP to EN drill direction

Two ways to drill

Test meaning → word and word → meaning, each scored separately so you know which direction needs work.

Racki answer screen showing kanji with romaji reading and English meaning

Reads any word

Romaji sits alongside the original script — including kanji — so you can always check yourself.

Private by design

Everything stays on your device. No account, no cloud, no sign-up.

Free

One discreet banner ad keeps it free. No pop-ups, no paywalls.

Languages

18 Duolingo courses and growing

Review vocabulary from the courses you're already taking.

Arabic French German Greek Hindi Irish Italian Japanese Korean Latin Norwegian Polish Portuguese Russian Spanish Swedish Turkish Ukrainian