This app is a fork of the deprecated Simpletask Android app.
An APK file is available from the releases page.
Only the Cloudless version is supported and mainly only core features are supported.
The original text follows below.
Simpletask is a simple task manager for Android, based on the brilliant todo.txt format by Gina Trapani.
See documentation here.
Simpletask is translated using weblate:
Cloudless stores tasks in a todo.txt file on the device. A separate app (such as Syncthing) can be used to Sync the file.
Because the todo.txt file could be anywhere on the device to allow sync by a different app, the Cloudless version requests full storage access. This is unfortunately the only way to make common use case work while staying sane.
Nextcloud stores tasks in a todo.txt file using Nextcloud.
Nextcloud stores tasks in a todo.txt file on any WebDAV server.
The Dropbox version is not available from F-Droid. You can download builds of the different versions from: https://mpcjanssen.nl/artifacts/