I had to submit upgrades for iStayHealthy - both for iOS (iPhone) and Android recently.
A couple of users reported that iStayHealthy would hang after they updated their device to iOS version 6. This happened when they had iCloud enabled at the same time.
I submitted an upgrade to Apple on 7 Oct that should hopefully address that - and also includes other bug fixes and improvements.
Apple should be reviewing the new version shortly.
just a very minor - but important none the less - update. Version 2.0.8 was just uploaded to Google Play today 13 Oct. The new version includes the new combination drug Stribild in the mediation list.