I think that TomTom use their own OS derived from Linux, so you won't get anything to work on that. Pocket FMS & SkyDemon currently only work on Windows devices.
Memory Map isn't expected to be available on Android until much later this year.
The MMTracker app uses the old file format; 2009(?) was the last year they were available. You can indeed find torrents for some 2005 charts which should work in MMTracker - if they're still being seeded.
Of the self scan options,
OziExplorer have an Android beta out. They also have their own copycat in
Androzic. My preference is for
Orux Maps.
A simple, free solution would be to use
XCSoar from the Android market. You can set it up as purely a moving map, with airspace markings & warnings, without any of the gliding info.
(not my image)