Little programs or scripts or automations you’ve created ad-hoc to solve a particular single use case
I have lots of shortcuts i make on my phone and I have one i love that detects when bluetooth accidentally or purposefully disconnects from my speaker and reconnects it and fixes a playback glitch so its back to playing properly
It’s not an answer, but I really hate how hard this is to do on Android, including it’s FOSS versions. You can root it and do something like that then, but that undercuts the whole system design and is a terrible hack.
That’s like my main beef with the whole mobile ecosystem.