Your wife would ABSOLUTELY have the same issue on iOS, as iOS does not support flash at all. That is the only reason she cant access weight watchers, flash. When she gets the update, she WILL be able to access it, but never will be able to access it on iOS.
What app does she want to run that is 2.2 only? I have only run into a few, and they were ALL VERY VERY technical apps that require rooting that dealt with things that I really doubt your wife is messing with.
True on the Flash point, but of course WW has an app for iOS. It isn't the fault of Android that an app hasn't been made for the platform, but the 2.2 update would take care of that issue.
The app that she wants to run is some type of specialized medical application. I don't know if perhaps it also requires Flash support, but it runs under 2.2 and not 2.1.
Sounds like maybe an app that has flash videos embedded. Hopefully we will get the 2.2 update soon. Been running a beta version of 2.2 on mine and it absolutely flies.