CodeFlash: Runnable code cards

Code it. Remember it. Flash it! A casual flashcard app for memorizing small bits of code and syntax. Of course, it also works as a standard flashcard app! [ Recommended for ] • Anyone learning programming • People who want to learn common syntax and patterns by heart • Anyone who wants to review during commutes or in spare moments • Anyone looking for a personal flashcard app — code or otherwise ＊＊＊＊＊ ◆ iCloud Sync, too! (Pro) Sync your decks, cards, tags, study history, and images automatically across iPhone and iPad signed in to the same Apple ID. When you switch or add a device, just turn on the toggle to restore everything. [ What you get with Pro ] • iCloud Sync: sync your data across devices, with automatic backups • SQL & C++ Code Execution: run more languages and learn by writing code • Color Themes: 8 presets x light/dark to restyle your cards and the whole app • More detailed study stats (monthly graph, hardest-cards ranking, per-card grade history) • FSRS scheduling customization We'll keep adding more Pro features over time. [ Great even on the free plan ] • No limit on the number of decks or cards • No ads • Set a colored icon for each deck • Use the "Paper" color theme • Export / import your data (save the exported file to iCloud Drive, etc., then load it on another device to migrate your data) * Existing features will never be moved behind a paywall. Give the free version a try first!!! ＊＊＊＊＊ [ Features ] ■ Learn by writing code Type code directly into your cards and instantly check the console output. Supports JavaScript, TypeScript, Python, SQL, and C++ — learn by doing, not just reading. (JavaScript, TypeScript, and SQL run offline / Python and C++ require an internet connection) * SQL and C++ code execution is a Pro feature. ■ 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. You can also attach diagrams or screenshots using image blocks. ■ 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 effortless, lasting 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. ■ Works offline Most features — creating decks and cards, studying, and running JS/TypeScript code — work offline. Your learning data is stored on your device (and in your own iCloud when sync is on) and is not sent to external servers. No account registration required. * The following features require an internet connection: • iCloud sync • Running Python code (to load the execution environment) • Running C++ code (your code is sent to an external execution service, Wandbox, to fetch the result. No account or personal information is included.) [ Other Features ] • Card search, card duplication, and card transfer between decks • Shuffle cards to study • Archive decks and cards (excluded from study and stats; study history is kept) • JSON export / import (full backup) • TSV export / import (partial data including card text) • Daily reminder notifications • Dark mode • Partial Bluetooth keyboard shortcut support • Available on both iPhone and iPad