Google Voice was an iTunes app which was ironically removed after being in the app store for hardly one week after its introduction. The iTunes library found a bug that was specific to Google Voice’s interaction with iOS 5. The version was v1.3.0.1771 and was taken off to be fixed and later reintroduced.
Google Voice is now again a proud member of the app library in iTunes as the latest version fixes the bug and stays clean throughout. Version v1.3.1.1891 can be downloaded via the source link below.
Source: iTunes