For the complete documentation index, see llms.txt. This page is also available as Markdown.

System Requirements

Architecture and Technologies

To avoid any confusion as to why the requirements differ, it is important to understand the application's architecture:

  • Mobile versions (iOS / Android) and the macOS App Store version: Developed using native languages (Swift for Apple, Kotlin for Android). This ensures maximum system integration, low battery consumption, and high performance.

  • Desktop versions (Windows, macOS DMG, Linux): Developed using the modern cross-platform framework Qt 6.


Minimum System Requirements

Ensure your device meets the following requirements:

  • iOS / iPadOS: iOS 15 and newer.

  • macOS (App Store version): macOS 15 and newer (using Catalyst technology).

  • Android: Android 5.0 and newer.

  • Desktop (Qt 6 based):

    • Windows: Windows 10 (build 1809 or later) or Windows 11.

    • macOS (.dmg installer): macOS 13 and newer.

    • Linux: Modern distributions such as Ubuntu 22.04+, Debian 11.6+, Red Hat 8.10+ (requires GCC 10+ and glibc 2.31+ at the system level).

  • TV: Android TV 5.0+ or Apple TV (tvOS 15+).


⚠️ What to do if I have an older version of Windows, Linux, or macOS?

Since modern Desktop versions are based on the Qt 6 framework, they will not run on outdated operating systems (e.g., Windows 7, Windows 8, or older Linux/macOS builds that lack the necessary library versions).

If your system does not meet the minimum requirements listed above, you can still use the application. To do so, download the special Legacy version (1.0.2), which was built to support older systems:

👉 Download Happ Desktop version 1.0.2 for older OS

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