If so, it can easily be downloaded and converted, but each side loaded app is trial and error in regards to whether or not they work. That said, most do. I've really only come across a handful myself that really didn't work.
Unfortunetly, i'm running a leaked beta OS right now that has significant problems with the android runtime, so I can't test it for you personally, maybe someone else will chime in and volunteer.
A little update. I decided to get the Q10 and love it! Keyboard alone makes it better than any phone I have ever used.
I'm still having problems with sideloading invoice2go though? It will install, but not go thru once I hit "accept", it just goes back to the home screen?
Glad to hear you're enjoying the Q10! It really is a great phone. Have you reached out to the developer yet? We're they able to give you any feedback about the issues you were experiencing?
i had been using it for my entire buisness as well was working great on 10.1 for months (z10) now upgraded to 10.2 and does exactly the same as you describe WTF i need help now as well. i just dont get it .... any helpwould be great. ive tried debug token and now i cant even get a new token i feel doomed. the z10 is great but i may be exiting as well specifically due to ths one app........ not good