I did an update to my app recently and following the update the app has been unusable, first thing was that it lost all the maps I had previously downloaded onto my phone. Then it wouldnt re-download them. Now I have one downloaded but it wont access them unless I have signal? The main reason I have it is because I want something with me that I can access when I'm somewhere that doesn't have good signal, otherwise I'd just use Google Maps. If you haven't already updated it and yours works I would say, think long and hard before updating it because for me its ruined a usable format. Check out the reviews and the recent ones are absolutely dreadful, seems the development team have dropped the ball.