OpenTasks
by OpenTasks
What OpenTasks is
OpenTasks is free, open-source task management software for Android from OpenTasks in Dresden, Germany. It uses the iCalendar VTODO task model described by RFC 5545 and supports recurring tasks, reminders, and subtasks. Tasks can be organized by urgency, state, and timeframe. The app does not synchronize tasks itself and does not currently provide calendar support. Synchronization with a CalDAV server is possible through other apps such as DAVx5 and EteSync. The FAQ says the paid third-party app aCalendar+ can display OpenTasks tasks in a calendar view. Other applications can access OpenTasks data when you grant the required permissions. OpenTasks is released under the Apache 2.0 license. Its listed plans cost nothing and cover downloading, modifying, installing, building, and using the software. The website links to a GitHub issue tracker, while its privacy policy page says “To be done.”
Who it suits
It suits Android users who want free, open-source task management with recurring tasks, reminders, subtasks, and configurable task organization. It may also suit users who plan to connect tasks to CalDAV through another app.
What it does well
- Free Android task management
- Supports recurring tasks and reminders
- Includes subtasks and task categorization
- Apache 2.0 licensed
- CalDAV synchronization through other apps
What to know first
- No built-in task synchronization
- No current calendar support
- Privacy policy says “To be done”
- Android only
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Open-source task management for Android · Apache 2.0 license | Free |
| OpenTasks | Download, modify, install, build, and use at no cost | Free |
As opentasks.app lists them, read 22 Sept 2026. The maker's own page has the final word.
Verdict
OpenTasks provides a free Android task manager built around the VTODO model, with recurring tasks, reminders, subtasks, and categorization. Its lack of built-in synchronization and calendar support means connected workflows require other applications.
Facts from OpenTasks's own pages
- Calendar support
- OpenTasks does not currently support calendars; the FAQ says the paid third party app aCalendar+ can show its tasks in a calendar view. · opentasks.app, 12 Oct 2026
- Calendar sync
- No · opentasks.app, 22 Sept 2026
- Free plan
- Yes · opentasks.app, 22 Sept 2026
- Headquarters
- Dresden, Germany · opentasks.app, 28 Sept 2026
- License
- OpenTasks is published under the Apache 2.0 license. · opentasks.app, 12 Oct 2026
- Maker
- OpenTasks is brought to you by dmfs GmbH, whose contact page gives its address as Dresden, Germany. · opentasks.app, 12 Oct 2026
- Permissions
- Third party apps can access OpenTasks data when the user grants the required permissions. · opentasks.app, 12 Oct 2026
- Privacy
- The OpenTasks privacy policy page says “To be done.” · opentasks.app, 12 Oct 2026
- Purpose
- OpenTasks is open source task management software for Android. · opentasks.app, 12 Oct 2026
- Recurring tasks
- Yes · opentasks.app, 22 Sept 2026
- Subtasks
- Yes · opentasks.app, 22 Sept 2026
- Support
- The site links to a GitHub issue tracker for reporting issues. · opentasks.app, 12 Oct 2026
- Supported platforms
- android · opentasks.app, 22 Sept 2026
- Synchronization
- OpenTasks does not synchronize tasks itself, though it was designed with synchronization in mind. · opentasks.app, 12 Oct 2026
- Sync integrations
- F-Droid says tasks can be synchronized with a CalDAV server using apps such as DAVx5 and EteSync. · f-droid.org, 12 Oct 2026
- Task model
- It is built on the iCalendar VTODO task model described by RFC 5545. · opentasks.app, 12 Oct 2026
- Task organization
- F-Droid describes categorizing tasks by urgency, state, and timeframe. · f-droid.org, 12 Oct 2026
- Task reminders
- Yes · opentasks.app, 22 Sept 2026
Where OpenTasks stands on Freedom251
- To-do list apps#104 of 150