I am using a task application that has a linux version and there is also an android app available https://play.google.com/store/apps/details?id=net.rpdev.opentodolist.
This app is opensource but I can’t find it in the fdroid repositories and I installed it through the play store. It is very useful this tasks app because I can easily synchronize them using a nextcloud account.
Can you add it to fdroid?
Translated with www.DeepL.com/Translator (free version)