New features in Stacks on iPhone, iPad and the web.
iPhoneiPad
Practice settings
Choose how many cards each practice session uses: 10, 20, 50 or all of them.
Change the practice direction and hide context notes from Write and Swipe, without opening Settings.
Choose the memory strength at which Recall swaps a card's direction, so you write the word in the language you're learning.
Web
Introducing Stacks OS
Stacks OS brings Stacks to the web. Sign in from your browser to review and practise your cards, with everything kept in sync with your iPhone.
Create and edit stacks and cards, and use Craft to create cards with AI.
One Stacks Plus subscription works on both iPhone and Stacks OS.
Version 1.3.0iPhoneiPad
A refreshed Craft
Craft now uses a newer, more capable AI model to create your cards.
A refreshed Craft screen with a new animated orb. Craft is no longer in beta.
iPhoneiPad
AI Rules and Try again
AI Rules let you tell Craft how to write your cards. Turn the defaults on or off, edit them, or add your own. Rules are saved for each collection.
After a practice session, Try again repeats only the cards you missed, as many times as you need.
iPhoneiPad
Search your stacks
Tap the Your stacks title to search and filter your stacks.
Version 1.2.0iPhoneiPad
Craft: create cards with AI
Craft creates cards for you with AI. Describe a topic, choose how many cards you want, then preview them and add the ones you like.
Craft skips cards you already have.
iPhoneiPad
Export to CSV
Export your cards to a CSV file from the card library's edit mode.
Version 1.1.1iPhoneiPad
Hear your cards
Hear your cards read aloud with iOS voices, including the higher quality voice packs available in iOS settings.
Updated design for iOS 26.
Version 1.1.0iPhoneiPad
Stacks in your language
Stacks now follows your device language, including onboarding, in German, French, Italian, Spanish (Spain and Latin America), Portuguese (Brazil), Japanese, and Chinese (Simplified and Traditional).
iPhoneiPad
iPad and Write mode
A layout made for iPad.
Write mode accepts answers with small spacing or accent differences, and lets you know what was different.
Version 1.0iPhone
Stacks launches
Stacks is available on the App Store. Create stacks of flashcards, review them with spaced repetition, and practise with Write and Swipe.