Use APKPure App
Get Tiny Tiny RSS old version APK for Android
Piccolo client RSS piccolo per Android
Self-hosted FOSS RSS reader. You will need to install web application first. Trial version, buy if you like.
Please don't email me with tt-rss support questions. Use the forums instead.
Source: https://tt-rss.org/tt-rss-android
Forums: https://tt-rss.org/forum/