We just pushed an update to our iPhone/iPad App to fix some bug fixes and start to allow us to track whenever the App is disabled/enabled/removed via our dashboard.
The App is working very well and we have a beta page on our dashboard to allow you to see all your iOS devices using it:
https://my.cleanbrowsing.org/dashboard?page=settings&subpage=devices
Try it out and let us know how it goes.
thanks!