Move Tablet Talk app from one phone to another

[critterles]

I just got Tablet Talk working on my phone and Tablet, nice app. The problem is it's going to be a Christmas present and I need Tablet Talk loaded on my wife's phone.Is there a way to move it from my phone to her's or do I have to purchase another copy of Tablet Talk? It's her Tablet so I won't be using the app.
Thanks for any help

 

[Xopher]

Are you both on the same Google account?