Both applications are awesome but sometimes when what you need is just the clock because you don't use your small screen sized phone to play chess at all, and you want to use just the clock, you find yourself with a rather big app from which you use the smallest part.
I'm also looking for the right chess clock and there are many simple chess clock options in the app store right now through other developers. I'd recommend those if you are still wanting a simple app.
Both applications are awesome but sometimes when what you need is just the clock because you don't use your small screen sized phone to play chess at all, and you want to use just the clock, you find yourself with a rather big app from which you use the smallest part.