ulogger client is not cross platform (android,fdroid) for the logger but it can logg to any webserver you are in control of to ulogger-server : https://github.com/bfabiszewski/ulogger-server

I installed it from fdroid, is there a difference between play store and fdroid version?

Tasks.org on f-droid is great for this kind of use.

Im using home assistant and when i scan a tag i add a calendar event to HAs own calendar, for my air filter i add “check filter” 6 months from when i scan the tag.

I use them for infrequent maintanence like the filter in the attic, i tap a tag when i have changed that, same for car oil and a couple of other things. I get notifications when is time again.