Is it possible to have apps installed twice? ...

You sure you don't have the paid and the free Angry Birds installed? They offer both versions and they both look very similar.

 

Do both of the duplicate apps work? Can you delete one with the other remaining on the phone and have it still be functional? I haven't encountered this particular issue so I can't speak from experience but I'd just try to delete one and go from there.

 

I made this exact same discovery here a couple of nights ago. Two Angry Birds! I was like, WTF? Anyways, it wasn't, same error as stated: free vs paid.

I then confused AB Rio with another copy of AB when looking at their data in iCloud. Since all it says is "Angry Birds" for both of them. Too many AB versions!!!

 

Often times users will have different versions of the same app. Even updated apps sometimes show up as its own icon.

 

Hmm I never experienced this before, but once I had an app on my iPad and a copy of that app showing loading just beside it. I simply deleted that app.

 

I recently had this same problem on one of my iDevices, not sure which. But what I did was delete it on the device and then in iTunes on my desktop PC. It went away then. Hope you find the solution!

 

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