lineageOS

https://lineageos.org/

termux

https://termux.com/

fdroid

https://f-droid.org/

satstat

https://f-droid.org/en/packages/com.vonglasow.michael.satstat/

skymap

https://f-droid.org/en/packages/com.google.android.stardroid/

web utilities

https://radio.jezra.net

https://twilock.jezra.net