Kelson Reviews Mobile Apps

Amazon Music ★★★☆☆ I want to use it to listen to music. Amazon wants to use it to sell me more subscriptions.
KeePass2Android ★★★★★ Nice, clean interface to a KeePass2 database with auto-fill support for both websites and apps and seamless syncing over your own server or the cloud of your choice.
StreetComplete ★★★★★ StreetComplete is an easy way to contribute to OpenStreetMap on the go, as a beginner, or both from your Android phone.
Tusky for Mastodon ★★★★★ Impressed at how smoothly it works, especially with multiple accounts.
Vespucci (App) ★★★★☆ Vespucci is a powerful editor for OpenStreetMap on Android that can handle just about anything, though the learning curve is steep.
iNaturalist (App) ★★★★★ Streamlines the basic use case of posting an observation from your phone and narrowing down the plant or animal you're looking at.