Decks
LibraryDownload Decks on the App Store

Flashcards for iPhone with Anki-style spaced repetition

Decks schedules your reviews with SM-2, the algorithm Anki was built on. It comes with 23 free decks for Spanish, Japanese, Chinese and French (51,121 cards, most with native audio), and you can make your own.

Download Decks on the App StoreLibrary
Spanish Picture Starter1/5

Try it: flip the card, then rate it.

What Decks does

Scheduler
SM-2, the algorithm Anki was built on. Ratings: Again, Hard, Good, Easy.
Library
23 decks, 51,121 cards: Spanish, Japanese, Chinese, French. Most have native audio.
Your own cards
Front and back, with bold, furigana and fill-in-the-blank (cloze). Audio and pictures only come with library decks.
From a photo
Photograph a page or screenshot a dictionary entry; AI reads it and proposes cards, which you check before adding.
Ask
Type a question about the card you're reviewing and get an AI answer.
Rating
Tap, or drag the card toward the rating.
Daily limits
New cards per day are yours to set (default 20). The free plan has a daily review limit; Premium lets you set your own.
Stats
Reviews per day, retention, and a calendar of study days.
Offline
Reviews work without a connection.
Account
Optional. You can study without one.
Doesn't do
Open .apkg files, add-ons, FSRS, Android, iPad or desktop. The app is in English.

Library decks by language

All 23 decks

Japanese flashcards

5 decks · 10,232 cards

  • Japanese Hiragana
  • Japanese Katakana
  • Japanese Core 2000
  • Japanese Core 6000
  • Tae Kim's Japanese Grammar

Chinese flashcards

9 decks · 15,762 cards

  • Essential Chinese
  • Chinese Frequency 5000
  • Chinese Frequency Sentences
  • Chinese Grammar HSK 1
  • Chinese Grammar HSK 2
  • Chinese Grammar HSK 3
  • Chinese Grammar HSK 4
  • Chinese Grammar HSK 5
  • Chinese Grammar HSK 6

Spanish flashcards

5 decks · 20,526 cards

  • Spanish Picture Starter
  • Spanish Frequency 5000
  • Beginner Spanish Sentences
  • Spanish 9000 Sentences
  • Spanish Conjugation

French flashcards

4 decks · 4,601 cards

  • Essential French
  • French Frequency 500
  • 501 French Verbs
  • French Sentences

Screenshots

A Chinese sentence card mid-review, with the deck's card list behind itRating a Japanese card: Again 1 day, Hard 2 days, Good 4 days, Easy 6 daysThe library: Essential French, Japanese Core 2000, Chinese Frequency 5000, Spanish Frequency 5000Add from image: turn a screenshot or photo into cardsAsking a question about a Japanese cardCreating a new deck, or importing a prebuilt oneStats: reviews per day and a calendar of study days

How spaced repetition works

Each time you remember a card, the gap before you see it again grows. Miss it and it comes back in 10 minutes, then restarts at 1 day.

The research, and exactly what each rating does

One card, rated Good every time:

  1. 10 min
  2. 1 day
  3. 2 days
  4. 5 days
  5. 12 days
  6. 30 days
  7. 75 days

Using Anki now? Decks vs Anki, feature by feature.

Questions

Is Decks free?

Yes. Library decks are included. The free plan has a daily review limit; Premium lets you set your own.

What is spaced repetition?

Reviewing each card at growing intervals, timed for just before you'd forget it. Cards you know come back less often; cards you miss come back sooner. Decks uses SM-2, the algorithm Anki was built on.

Is Decks an Anki alternative?

It uses the same four ratings (Again, Hard, Good, Easy) and SM-2 scheduling, and includes ready-made language decks. It can't open .apkg files, so if you rely on shared Anki decks, use Anki.

Can I make my own flashcards?

Yes, on any subject: front and back, with bold, furigana and fill-in-the-blank. You can also photograph a page and have AI propose cards, which you check before adding. Your own cards can't have audio or pictures.

Is Decks on Android?

No. iPhone only; there is no iPad, Android or desktop app.

Do I need an account?

No. An account is optional and can be added later in Settings.