Pocket Juke
A music player that just plays your music.
Music apps got complicated. They want an account, a subscription, a connection, and a slice of your attention, and most of them are surprisingly bad at the one job they exist for, which is playing the files already on the phone.
Pocket Juke does that one job. You point it at folders, and it plays.
Point it at folders
No library ceremony. Pick the folders your music lives in and it reads them, including files with no tags at all, working out artists and albums from the way the folders are named.
Artwork without asking permission
It looks for cover art in the folder, then inside the file, and only reaches out to the internet if you turn that on. It works completely offline.
A screen that changes with the record
The colour of the Now Playing screen is taken from each album's artwork and eases smoothly from one to the next, so the app takes on the character of what you're listening to.
Works where music should already work
Full background playback, lock screen and headphone controls, and controls in the car and on a watch.
I have a large collection of ripped music with almost no tags on it. Every player I tried either refused to see it or turned it into a wall of unknown artists.
It is a small app, and that is the point. Every feature in it had to earn its place, and most proposed ones didn't.
What it proves: Constraint as a feature. Deciding what a piece of software will refuse to do is most of what makes it pleasant to use, and that is a design judgment, not a technical one.