Hello, 

It seems that iOS builds (.ipa files) cannot download to one's iPad directly. Is this correct?  When I tested downloading from my iPad, it says download successful, but then sends me to my Appstore.   I just wanted to make sure I'm not doing anything wrong. 

Android builds seem to work without any issue.

Well, yes, Apple devices are notoriously locked down. You probably need to jailbreak one before it's possible to side-load apps, while on Android it's just a checkbox to toggle in the settings.