How do I move an app to another phone?

[AC Question]

I have two Note 2 phones. One of them has an app I'd like to be able to use on the other phone. I got it simply from the play store. Well now I can't find it anymore so I guess it is no longer available. Is there a way to some how "move it over" or install it on the other phone from what is installed on the other phone?

 

[Rukbat]

Use App Backup & Restore to back it up to an apk file, move the spk file to the other phone and tap it. It will install.