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Karui ToDo

Karui ToDo is a free, open-source notes app for Android. 130kB aesthetic offline todo list app with calendar, sync and widgets. It has 152 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.

github.com/ronynn/karui (opens in a new tab)

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About Karui ToDo

An open source, privacy focussed, 120kB aesthetic Google Tasks alternative todo list app to quickly jot down things to do. Inspired by the system-24 theme and the Windows Mobile design system, this app's design is evolving into being even more eye-catching. It's also inspired by the functionality of f-droid app orgzly and simplicity of playstore apps like colornote and tries to be a better designed alternative to them. This app never connects to the internet, you can setup sync to use Karui on other devices or alongside other markdown/text editors as the synced file is a markdown file.

Privacy and F-Droid

F-Droid builds Karui ToDo from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.

No anti-features flagged on the latest F-Droid build.

Screenshots

  • Karui ToDo screenshot 1
  • Karui ToDo screenshot 2
  • Karui ToDo screenshot 3

Screenshots from the app's F-Droid listing.

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FAQ

Karui ToDo FAQ

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Is Karui ToDo free and open source?

Yes. Karui ToDo's source code is public on GitHub under the GPL-3.0-only license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.

How do I install Karui ToDo?

You can install Karui ToDo from F-Droid (package io.github.ronynn.karui); the links are on this page. Its GitHub repository also publishes releases (latest: 2.2).

Is Karui ToDo still maintained?

The repository's most recent commit was on Oct 23, 2026. Its F-Droid listing was last updated on Oct 14, 2026. appsgit only lists apps whose repository had a commit in the last six months.