Using apps on one device with different Apple ID's
88733
2 Apple IDs on one device?
150168
Can I install apps bought on the Mac App Store on multiple computers?
139140
Does iTunes Home Sharing transfer in-app purchases?
93917
How to download past purchases from old Apple ID without waiting 90 days to switch back to new Apple ID?
102057
How to keep two versions of an app installed?
79440
Mac App Store, reuse apps after changing country
112225
Can you play Clash of Clans using the same Apple ID?
64716
How can I (or can I even) transfer iTunes/App store credit from one Apple ID to another?
22350
How do I delete unwanted Apple ID's?
54057
Switch Apple ID
32069
Can the Mavericks install binary be shared between two different apple accounts?
85528
2 ipa files for same app (for better size and performance)
53947
How can I control an app on my iOS device from Mac or PC
105337
How can I run multiple copies of the same app?
1792
how can you get the app ID for my iPhone application before I submit it to Apple?
72320
How to install apps which require a newer version of iOS on a 1st gen. iPad?
34125
Re-sign IPA (iPhone)