Anyone know a good timer where I, for example, set it for 1 minute and start it and then every 1 minute it plays a short sound. And that's it. No interaction required with the phone until I want the timer to stop.

This is for rotating through a bunch of different stretches/exercises routine 1 minute per stretch

Every app I've tried is too complicated.

What you want to search for is “interval timer”.

I’ve used this one in the past, but there are a lot out there.

https://apps.apple.com/us/app/interval-timer/id1327053127

This is kind of dumb but for any common interval length there is probably a YouTube video that's long enough for your workout. For example, 30 seconds and 1 minute: https://www.youtube.com/watch?v=t_Bb4PfLvJE, https://www.youtube.com/watch?v=Y-AYC3_DbpY. Save the ones you need to a playlist and they should be pretty quick to access.

I created an Apple shortcut based on what I found here:

https://www.lifdb.com/posts/2024/12/17/how-to-create-an-inte...

It does “x minutes with y seconds recovery”, and for your use case you can set y=0.

I've used Seconds Pro[0] for this before - comes with a bunch of presets which were handy at the time but also has wide flexibility to create your own (a continuous 1 minute repeat with beep is easy.)

[0] https://www.intervaltimer.com/app

I like this one: https://apps.apple.com/dk/app/fortime-workout-wod-timer/id66... Really simple and no ads

It would take about 2 minutes to code that up with an LLM, and not much longer to code it by hand. Building apps to scratch personal itches that would otherwise be infeasible is one of the best new capabilities that nearly everyone in the world has been recently granted.

Intervals Pro

Search for boxing timer.