[If this is an off-the-wall question, I apologize, but can't find a similar discussion via search. Similarly, this looked like the right forum to post. If otherwise, moderators feel free to move.] As you likely know, when approached from a computer, Google Play (Android Market) will list which applications are compatible with which devices, providing the Market had prior knowledge about each of them. I like this feature and have used it to maintain compatibility between devices and OS builds that I currently have. I'm looking for the reverse of this. IOW, whether a certain program will work on a device I have yet to own. Rationale: Cross-compatibility is important to me in some instances. I've often had to use alternate programs instead of a preferred one just to maintain that compatibility, and it's always by testing each program on each device. Invariably, there's going to be a newer device to replace a current one. Since I have yet to own the new device, I can't check a certain app on the market for compatibility. Example: Of my current devices, program 'x' will, say, work on the old Moto Droid. The same program won't be available for the Acer, probably because it's a tablet. And, the same program won't work on the 'Eris', I'm guessing because the OS build is frozen at this point. Is there such a reverse reference/matrix, and I've just been unable to find it?