jtx Board | journals & tasks

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4.5
680 reviews
Content rating
Everyone
50K+
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Content rating
Everyone
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About this app

Elevate the power of the iCalendar standard to the next level, use the potential of the combination of journals (VJournal), notes (VJournal) and tasks (VTodo) out of one app and use DAVx5 to synchronize your entries with the CalDAV-server of your choice!

iCal standard compliant
Using the iCal standard ensures compatibility and interoparability with other apps and services independent of a dedicated provider or infrastructure. Journals and Notes are compliant to the definition of the VJOURNAL component, Tasks are compliant to the VTODO component. Future features will also include import and export functionalities to and from .ics files :-)

Combine journals, notes & tasks
Instead of using separate apps for journals, notes & tasks you can use them out of one hand, combine and link them to each other, e.g. create meeting minutes and link your tasks to them.

Sync with DAVx5
Synchronize your entries with any compatible CalDAV server by using DAVx5. By using DAVx5 you are free to choose your preferred provider for CalDAV, you can even use your local server to store and synchronize your data.
Note: DAVx5 is an independent app and must be acquired separately.

Open Source
Your data can contain private and sensitive data by their nature. We believe that individuals and companies should be able to be in full control of their own data. This means the freedom to choose where and how the data are stored, and freedom in choice of software. That is why we chose DAVx5 as a Sync Adapter to synchronise your data between your phone and any compatible CalDAV-server. The source code for jtx Board is publically available - find out more on https://jtx.techbee.at !

What does VJournal and VTodo mean?
VJournal and VTodo are calendar components defined in the international standard RFC-5545, the Internet Calendaring and Scheduling Core Object Specification (iCalendar), see https://datatracker.ietf.org/doc/html/rfc5545 . This standard also defines the VEvent component, which is the standard definition for calendar event entries. jtx Board is using the VJournal component according to this iCalendar standard for journal entries and tasks. VJournals can have a defined start date, but they cannot have a duration or an end date. VJournals with a defined start date are considered journals entries in jtx Board, VJournals without start date are interpreted as notes. The VTodo component as defined in the iCalendar standard defines the technical specification of tasks, which can have a scheduled start, due and completed date as well as a progress and a completed status (amongst others).

The VEvent definition is widely used, the VTodo component also found some implementations in Apps, but the VJournal component remained in the dark almost not being implemented at all by other apps and services. With jtx Board we would like to revive the usage of this standard and empower it with the possibilities to link and combine VTodos with VJournals - and in the future also VEvents! :-)


Find out more on https://jtx.techbee.at
Updated on
Jan 23, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.5
617 reviews
David Desperado
April 3, 2026
OpenTask is no longer available. The only way I could find it was on F-Droid. Switched to this app. It's different but I'm starting to really love it. The more I use it, the more I love it. Thank you to the developer for a one time fee option. I refuse to do monthly rent to own apps anymore. Only thing missing, and not the developers fault is integration with ACalendar+ and ACalendar+ app. So far, it only works with OpenTask. Thank you to the Developer for an awesome app! Great job!
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Ramon Pla
October 9, 2024
The app functionality is great. It works well for any essential use case. Almost my ideal. Using VJOURNAL is a fantastic idea but ends up being a double-edged sword. Pragmatically it just doesn't seem to be making headway. A fallback to other methods would make this more flexible. For longer notes, you need to manually scroll to the bottom - a minor bother but easily managed. While the interface is busy, it gets easier to ignore the extras over time.
6 people found this review helpful
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Thomas Finstad Larsen
April 10, 2026
slow to load and show tasks. if a task is marked done and the app closed quickly it won't always stay as completed. loads recurring tasks into the future to the point where it now thinks I have almost 4000 tasks to do. using the home screen widget to mark as completed does not always work. does the job but lacks polish.
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What’s new

- New Markdown renderer
- Version updates
- Bugfixes