This app was mentioned in 1 comment, with an average of 2.00 upvotes
I'm not sure what languages you know, but I also just found this... :)
https://github.com/blasut/Timewave-Zero-JS
Now I want to build a Timewave Zero app. It must live on! Haha!
It probably wouldn't actually be that hard... Hmmmm... Would anyone use such a thing? I wonder...
I found this one: https://play.google.com/store/apps/details?id=com.hiware.timewaive
But it looks a bit cumbersome, and outdated as well, and is apparently broken on newer versions of Android.