[adam_albrecht]

Downloaded it, but it asked for permission to use MacOS' accessibility features, which I thought was weird.

But they mention iOS and mac apps on the site coming soon and have an email signup form.

[dhosek]

A lot of non-accessibility apps use the accessibility features to do things like window resizing and clipboard management. Looking at my relatively pristine MacBook Pro's settings, I've got Flycut and Rectangle (expected) and less expectedly Dropbox and Aquamacs with accessibility access.

I think (but could be wrong) that it's a relatively low-risk permission to grant.

[jitl]

It’s a risky permission. It allows the app to read keystrokes and manipulate other apps as though they were receiving input from the user.

[adam_albrecht]

I totally understand why certain apps need it, but not a simple music player.