pocketFORTH

Learn FORTH on your iPhone

Free · Designed for iPad. Not verified for macOS.

Pocket FORTH 2.0 brings FORTH to iPhone and iPad with live editing, Wi-Fi remote terminal and ESP8266/ESP32 support. Discover one of the programming languages that helped shape modern computing. PocketFORTH is a modern FORTH environment inspired by the golden age of pocket computers and home computing, bringing the power of interactive programming directly to your iPhone and iPad. Whether you're a retro-computing enthusiast, a student, an electronics maker or simply curious to explore one of the most influential programming languages ever created, Pocket FORTH lets you write, run, edit and save FORTH programs through a clean, fast and completely offline interface. Designed for both learning and experimentation, Pocket FORTH combines the simplicity of the original language with modern features including live editing, dictionary browsing, source inspection, QR code sharing, persistent storage and a growing collection of built-in words compatible with classic FORTH systems.

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PocketFORTH is no longer just an interpreter. Version 2.0 introduces Pocket FORTH Embedded, extending the same programming experience to ESP8266 and ESP32 development boards. Connect over Wi-Fi to a board running Pocket FORTH Embedded and use your iPhone or iPad as a portable FORTH development console. Upload and download programs, interact with the remote interpreter, test hardware in real time and continue developing without leaving the app. The Pocket FORTH Embedded firmware is available as a free download from the official project website. Features • Interactive FORTH console • Live editing of word definitions • SEE, EDIT, COPYWORD and FORGET commands • CREATE, VARIABLE and CONSTANT support • Program save and load • QR Code import and export • Wi-Fi remote terminal • ESP8266 and ESP32 support • Offline operation • Optimized for learning and experimentation Whether you're rediscovering FORTH after many years or approaching it for the first time, Pocket FORTH offers a compact, authentic and enjoyable programming environment that fits in your pocket.

Version 2.0

The developer, Leonardo Del Nonno, 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 based, for example, on the features you use or your age. Learn More

    Accessibility

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

    Information

    Provider
    • Leonardo Del Nonno
    Size
    • 1.3 MB
    Category
    • Education
    Compatibility
    Requires iOS 15.6 or later.
    • iPhone
      Requires iOS 15.6 or later.
    • iPad
      Requires iPadOS 15.6 or later.
    • iPod touch
      Requires iOS 15.6 or later.
    • Mac
      Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 Leonardo Del Nonno
  • Developer Website
  • Privacy Policy

    • More by Leonardo Del Nonno

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