Default Metro UI App in windows 8.1


My english is not the best but I will try to explain the best I can.

I use an app for a magazine that was free, but after the update the magazine got paid to be able to read it. This in my laptot
In my girlfriend laptop she didn't update and block that possibility, due to that is still free.

Is there a way, without recovery since there's no recovery before that update, of recovering to the previous version in my laptop, I tried to copy the files from my girlfriends laptop to mine, but didn't work.

Hope I was understandable.

Thanks in advance for any help!