Every package manager you mention is shit. Look at guix, nix or pnpm for better, innovative concepts and ideas and implement them better.

Giggity for hacker and other events

Save locally to save shared files

Netguard to block and log network access of apps

Bineural Beats to have noise on your headphones while its loud

Öffi for Trains and busses

Gobandroid to play Go

BinaryEye to create, scan and store QR Codes

UntrackMe Redirects you to privacy

Change Detection of websites

Vector Camera Camera effects, like ASCII or sketches

UsageDirect Awesome Statistics about your usage of apps

Qalculate Calculator

Stealth To access reddit

Pedometer counts your steps

Phypox Access to your devices sensors

WhoBird Identifies Birds by their sound

Jami Messenger

Lichess Chess on and offline

Droid-ify Way better F-Droid Client with many Repos Out of the box