You can create a list, add turns (in order), and advance the turns in sequential or random order. That is pretty much it.

I guess a to-do list or something could do something similar, but this is designed with 'taking turns' in mind.

It's a PWA, so you can "Add to Homescreen" rather than download an app from the app store. Or use it in your browser.

I've been using it every day for a bit now, thought I'd share.