These guys replaced MM with MM2 when the original was LESS than 12 months old. They kept this version to make everyone buy MM2 so unlike other apps where you get the update, you had to pay for this update.
As a result, this version remains online to provide 'updates' to the original version to justify keeping them separate. However, apart from one token update which gave a substandard map of Fraser Island (the one that came with the app was better than this new version), there hasn't been any updates at all.
I know this cause I have MM (only had it for 4 months before it was superseded) and feel like I have been ripped off. I'll never buy anything from those guys ever again.