"Apple's version is bad on so many levels it's hard to imagine a workable version for at least a year or two."
Apple announced in June that its new operating system for mobile gadgets, iOS6, would replace the Google Maps app with its own custom-made mapping software.
iOS6 became available to existing users of the iPhone, iPad and iPad Touch on Wednesday, and anyone who installs it will have to use the new maps.
The system comes pre-installed on the iPhone 5, which debuts across nine countries today.
But the glitches have put a dampener on the launch and the strong reviews for iOS6's other features.
Users have reported satellite images showing various locations, particularly in rainy Scotland, obscured by cloud - while a search for Manchester United Football Club directs users to Sale United Football Club, for footballers aged five and above.