No, this will download the latest version of the app.The easiest way I could think of is logging out of the App Store, logging in with her credentials, and hitting the download button in recent purchases. In theory that should work, not 100% certain though.
If your iTunes on the desktop has the old version installed on it then you can sync it from there.How do I install an old version 3.0 of an app onto my new iPhone? The App Store currently has the latest 4.0 version of the app. But my wife iPhone currently has the old version 3.0 on her phone. How do I transfer it onto my iPhone?
That wouldn't work if the Apple ID is different though right? Otherwise if her phone is on iOS 8 or earlier that could be possible.No, this will download the latest version of the app.
OP, there is no way to do it, unless its a compatibility issue with iOS. Then the App Store will automatically download the latest compatible version with your device. Before App Thinning, you would be able to transfer the .ipa file to iTunes and then you could sync it onto another device. But now its not possible.
As stated by Paddle, we still can install old version of apps as long as the ipa file is there.Before App Thinning, you would be able to transfer the .ipa file to iTunes and then you could sync it onto another device. But now its not possible.
Correct. Different Apple ID doesn't matter. But I don't know if iTunes is even capable of transferring apps from Pre-iOS 9 devices anymore. I have an iPad 2 on 7.1.2, and iTunes still won't pull apps from the iPad. I wonder if its because its so old.If your iTunes on the desktop has the old version installed on it then you can sync it from there.
If you have an iCloud backup from before the app updated you can use that also (though you might lose some things). I think there are other methods but they're very complicated.
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That wouldn't work if the Apple ID is different though right? Otherwise if her phone is on iOS 8 or earlier that could be possible.
Yes, but the issue that the OP is describing is the fact that he doesn't have the .ipa and now there is no way to get it because of app thinning.As stated by Paddle, we still can install old version of apps as long as the ipa file is there.
But for OP, unless jailbroken, there is no way to extract installed app out of iOS.
As stated by Paddle, we still can install old version of apps as long as the ipa file is there.
But for OP, unless jailbroken, there is no way to extract installed app out of iOS.
Just because you can extract it does not mean you can now sync it to another device. Again, App Thinning/Splitting prevents this. iTunes probably won't even accept the .ipa file as its not a full file and therefore it cannot be synced to another device.Not true. You can use iExplorer to extract the ipa file from a backup provided you have the appropriate passwords.