FlashStacksPress kit and product facts
Accurate, up-to-date information about FlashStacks for writers, reviewers and educators.
Last updated: 17 October 2026
About FlashStacks
One line: FlashStacks is an iPhone flashcard app that puts your cards in Home Screen and Lock Screen widgets, turns PDFs into decks with AI, and schedules reviews with spaced repetition.
Short description: FlashStacks is a flashcard and study app for iPhone. Cards appear in Home Screen, Lock Screen and StandBy widgets, where you can reveal the answer and move to the next card without opening the app. Reviews are scheduled with an SM-2-style spaced-repetition system. Premium generates 10–100 cards from a PDF such as lecture slides, creates image occlusion cards from diagrams, and includes 5,100 vocabulary cards for French, Spanish, Japanese, Korean and Mandarin.
Product facts
| Name | FlashStacks (App Store: "FlashStacks - Flashcard study") |
| Website | getflashstacks.com |
| App Store | apps.apple.com/app/id6762071988 |
| Developer | Bailey Skewes |
| Category | Education |
| Platform | iPhone, iOS 17.6 or later. Not available on Android, iPad (as a native app), desktop or web. |
| First released | April 2026 |
| Price | Free download. FlashStacks Premium: US$4.99/month or US$39.99/year, with a US$2.99 first month on the annual plan. |
| Free plan | Spaced-repetition study, widgets, import, stats and streaks, up to 2 stacks |
| Premium | Unlimited stacks, AI decks from PDFs, image occlusion cards, FlashStacks Learn language packs |
| Scheduling | SM-2-style: ease factor; Again / Hard / Good / Easy or swipe; intervals capped at one year. No FSRS. |
| AI generation | From a PDF; 10–100 cards; High-Yield or Comprehensive mode; diagram pages suggested as image occlusion cards; cards reviewed before they're added. Needs an internet connection. |
| Widgets | Home Screen (small, medium, large), Lock Screen, StandBy; tap to reveal, next and previous card; adjustable card frequency. Live Activity on the Lock Screen and Dynamic Island while studying. |
| Import | CSV, TSV, JSON and Anki plain-text exports. No .apkg import, no export. |
| FlashStacks Learn | 5,100 cards (1,020 each) for French, Spanish, Japanese, Korean and Mandarin, with romanisation for Japanese, Korean and Mandarin. Phones set to another app language get English packs. |
| App languages | English, French, German, Italian, Japanese, Korean, Portuguese (Brazil), Russian, Simplified Chinese, Spanish |
| Data | Cards and study history are stored on the device. See the privacy policy. |
What makes it different
- Built around widgets. Most flashcard apps need you to open them; FlashStacks puts the next card on your Home Screen and Lock Screen.
- From lecture slides to a deck. Upload a PDF and review an AI-drafted deck, including image occlusion cards from diagrams.
- Ready-made vocabulary. Language packs that rotate through your Lock Screen during the day.
It isn't the right choice for everyone: there's no Android, desktop or sync, and no shared-deck library. See our comparison with Anki, Quizlet, RemNote and Brainscape.
Images
- App icon (PNG)
- Lock Screens in five languages (JPG, 1920×880)
- AI Card Generator screen
- Stack statistics screen
- Image occlusion card
- Medium Home Screen widget
You're welcome to use these images when writing about FlashStacks.
Contact
Press, review copies and partnership questions: support.flashstacks@gmail.com.