Lapse is a cross-platform flashcard application built with Flutter. It uses spaced repetition to help users review and retain information more effectively, and offers a modern interface for studying across desktop and mobile platforms.
This is free and open source software.
Key Features
- Uses the FSRS spaced repetition algorithm to schedule reviews efficiently.
- Supports nested decks for organising flashcards in a hierarchical structure.
- Offers offline-first operation with local SQLite storage.
- Provides a custom desktop interface with frameless windows and native-style titlebar buttons.
- Includes tools for creating, editing, and managing flashcards and decks.
- Cross-platform support – runs on Linux, macOS, Windows, Android, and iOS.
Website: github.com/Pairadux/lapse
Support:
Developer: Pairadux
License: GNU General Public License v3.0

Lapse is written in Dart. Learn Dart with our recommended free books and free tutorials.
Related Software
| GUI Flashcard Software | |
|---|---|
| Anki | Extensible flashcard learning program |
| Mnemosyne | Spaced repetition flashcard program |
| Parley | Vocabulary trainer for KDE |
| KWordQuiz | Flashcard learning program for KDE |
| Kalba | Language learning tool based on the idea of sentence mining. |
| Lingueez | Desktop vocabulary trainer for language learning |
| Essentialist | Simple, private, and cross-platform flashcard app |
| Memorize | Store flashcard sets |
| Oboete | Simple flashcards application for the COSMIC desktop |
| Memorado | Learn using spaced repetition |
Read our verdict in the software roundup.
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Hi Steve. There’s also a github page. Alas, the lapseapp website is down right now.
Hi Torin.
Yes, I’ve replaced the website link to github as that should stay up. Thanks.
Steve, maybe you shouldn’t add software that’s just seen a very early release like Lapse? Quite a lot never progress.