JTX Board, it's an Android app for tasks, notes, and journals, it uses iCalendar to store all the data, and integrates with DAVx⁵ to sync your data to any CalDAV server, such as Nextcloud, so you can see your tasks in the Nextcloud web app, and automaticlly sync them to your PC.
I use the Nextcloud app on my KDE Plasma laptop, and it works perfectly, I only realized this works when reminders started magically showing up on my laptop without me needing to set anything up
I use the Nextcloud app on my KDE Plasma laptop, and it works perfectly, I only realized this works when reminders started magically showing up on my laptop without me needing to set anything up
https://jtx.techbee.at/ https://www.davx5.com/ https://nextcloud.com/