iXercise has been sent to the Apple App Store for review. If all goes well, it should be available for purchase/update in a week! This update includes iOS 11 compatibility as well as new flat icons and updated colors!
I have completed the basic update to iXercise for iOS 11 compatibility. I am now in the process of updating the Dropbox interface for iOS 11. I also had to remove Socialize integration since it is no longer an actively supported platform.