CodeFlash: Runnable code cards

Code it. Remember it. Flash it!
The ultimate flashcard app for learning programming.
Of course, it also works as a standard flashcard app!


[ Features ]
■ Learn by writing code
Type code directly into your cards and instantly check the console output.
Supports JavaScript, TypeScript, and Python — learn by doing, not just reading.
(Python requires a network connection)

■ Create cards with 3 types of blocks
Combine text, code, and image blocks freely to build your perfect card.
Each card has a front, back, and memo section — all supporting all 3 block types.

■ Study with clean, readable Markdown
Text blocks support Markdown formatting.
Use headings, lists, bold text, and more for well-structured, easy-to-read content.

■ Efficient spaced repetition learning
Powered by the FSRS algorithm.
Automatically adjusts review timing based on your understanding for effective memorization.

■ Organize and study with tags
Tag your cards to keep them organized.
Create your own categories like "Basics", "Advanced", or "Review" for targeted studying.

■ Track progress with study history and statistics graphs
View your study activity with a contribution graph.
Check overall progress, deck mastery, and rating breakdown — all in graphs.


[ Other Features ]
• Card search, card duplication & card transfer between decks
• Shuffle cards to study
• Data export / import support (JSON file backup)
• TSV export / import support (partial data including card text)
• Daily reminder notifications
• Dark mode support
• Partial Bluetooth keyboard shortcut support


[ Note ]
All features are currently available for free.
In a future update, some advanced features may be offered as paid options.
Existing features will remain free.
We will notify you in advance of any changes. Show More