https://f-droid.org/en/packages/de.dennisguse.opentracks.playstore/
OpenTracks (Reproducible build) | F-Droid - Free and Open Source Android App Repository
A sport tracker buddy that respects your privacy.
reproducible build fdroidfree
https://f-droid.org/en/packages/com.zell_mbc.medilog/
MediLog (Non-reproducible build) | F-Droid - Free and Open Source Android App Repository
Log health metrics such as blood pressure, weight and quite a few others
reproducible build fmedilog