Fully-configurable but needs sound cues

You can control just about every parameter of the app, which is really handy. Being able to choose your music, the sleep controls, etc. But as others have mentioned, it really needs to have sound cues that follow the currently selected breath timing.

It might be more natural to have the waves follow their own rhythm, but youre glued to the screen otherwise. In fairness to the developers it might be a bad choice between loading the app with a hundred different sound files, or the inability of the iPhones chip to timestretch sounds .... still a great choice for a breathing app!

Another Colin about BreathPacer, v1.11