Can I simply copy an app from one phone to another?

mcf57

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Nov 29, 2011
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Me and the wife have android phones. There is the same free app on both of them, but hers was set up to NOT automatically update. Mine was set up to automatically update. She has v2.0 of an app (Samsung Charge) while I have v2.2. I would like to go back to v2.0 on my phone (Motorola BIONIC). I have turned my auto updates off too.

I can't seem to find an old version 2.0 of this app so was wondering if I could simply copy the app from her phone to mine. Is this possible? Can I just go into her phone and "copy" the app's folder/files? Do I maybe need to first move it to the memory card before attempting to copy it? Or is there more involved than just this?