CodeFlash: Runnable code cards

Flashcards with Code Execution

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Code it. Remember it. Flash it! A casual flashcard app for memorizing small bits of code and syntax. It also works as a standard flashcard app, and it now reads your cards aloud — handy for language study too! [ Recommended for ] • Anyone learning programming • People who want to learn common syntax and patterns by heart • Anyone who wants to review on the go or in spare moments • Anyone looking for a personal flashcard app — vocabulary, code, or otherwise [ Features ] ■ Learn by writing code Type code into your cards and run it instantly to check the output. Supports JavaScript, TypeScript, Python, HTML, CSS, SQL, and C++ — learn by doing, not just reading. ■ Read your cards aloud Hear the side you are looking at. Sentences that mix writing systems are read with the right voice for each part, and you can pick the voice and the speed — handy for memorizing vocabulary or reviewing with your ears. ■ Create cards with 3 types of blocks Combine text, code, and image blocks freely. Text blocks support Markdown — headings, lists, bold, tables, and more. ■ Efficient spaced repetition learning The FSRS algorithm adjusts each card's next review to your understanding, for effortless, lasting memorization. ■ Track progress with stats and graphs See your study activity on a contribution graph, plus overall progress, deck mastery, and rating breakdown. ■ Works offline Your learning data is stored on your device (and in your own iCloud when sync is on) and is never sent to external servers. No account registration required. [ Great even on the free plan ] • No limit on the number of decks or cards • No ads • Export / import your data to move it to another device * Existing features will never be moved behind a paywall. [ What you get with Pro ] A one-time purchase. A 7-day free trial is available. • iCloud Sync: sync your data across devices on the same Apple ID. On a new device, just toggle it on to restore everything • HTML / CSS Preview: your code renders as a real page right inside the card. Go full screen to click buttons and type into inputs, or practice DOM manipulation from JavaScript. You can also register shared HTML and images on a deck • SQL / C++ Execution: register deck-wide setup SQL and query the same database from every card • Per-Deck Speech Language: set the reading language for each deck, and a different one for the front and the back • Detailed Statistics: monthly study volume, per-grade rankings (top 10), and per-card performance • Color Themes: 10 presets × light/dark to restyle your cards and the whole app • FSRS Customization: tune review intervals to your own pace — shorter for thorough review, or longer for relaxed learning • Study Timer: a countdown (1–60 min) that runs only while studying. Repeat it for Pomodoro [ Other Features ] • Card search, card duplication, and card transfer between decks • Organize with tags and study across decks • Shuffle cards to study • Set a daily card goal • Archive decks and cards (excluded from study and stats) • JSON export / import (full backup) • TSV export / import (card text and other partial data) • Daily reminder notifications • Dark mode • Bluetooth keyboard shortcuts • Available in English, Japanese, and Spanish • Available on both iPhone and iPad * Running HTML, CSS, SQL, and C++, and previewing JavaScript, are Pro features. Reading cards aloud is free. * Internet is required only for iCloud sync and running Python / C++ (Python loads its execution environment; C++ is sent to Wandbox, an external service — no account or personal info is included). Try the free version first!

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This update adds auto read-aloud and a goal view for your activity history. [ New & Improved ] • Auto read-aloud (Pro): cards are read automatically when shown or flipped. Choose off, front, back or both sides, and override it per deck • Read-aloud can be turned off per deck: hide the button in a programming deck, for example • Added a "Goal" view to the activity heatmap (Activity on the Stats tab): once you set a daily goal, the past year can be shown either by study volume or by whether you reached the goal, so the days you made it stand out • Tap a badge in Stats → Learning Record to see when you earned it, or how much is left until you do • window.open now works in the full screen HTML preview (Pro): an http(s) URL opened from a link or a button opens in Safari, and window.close() closes the preview • Reworked the explanations shown by the i buttons: headings and items now follow one format, and an explanation opens only when you tap the button [ Bug fixes ] • Fixed an issue where highlight, bold, strikethrough, and underline in text blocks did not apply when the marks were next to punctuation such as Japanese brackets or quotation marks • Fixed an issue where tapping the name of a settings row opened its explanation instead of the setting • Fixed an issue where the goal reminder still fired, and the app icon badge stayed out of date, after another device's study was synced in from iCloud Also includes minor wording and display adjustments.

The developer, JUN NISHIMOTO, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • JUN NISHIMOTO
    Size
    • 40.8 MB
    Category
    • Education
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • ©︎ 2026 Jun Nishimoto