1 of 1 people found this helpful
They are two separate App: they can coexist.
I have both on my iPad. And the files associated with each respective app are, of course, different. One cannot open the other's databases.
Your title is different than your question... Go12 and Go11 can... Go11 is an update to Go1.2... So it updates Go1.2 to Go11.
As others have said, yes... but both apps are named "FileMaker Go" on the home screen and can only be differentiated by the color of the "Go" circle: 11 is green, 12 is blue/magenta.
Actually it's even more confusing because both the iPhone and iPad versions can be installed onto an iPad, and all 4 of the apps are named "FileMaker Go".