Snowmobile maps for cellphones are available at Backwoods GPS Trails, GPS Trailmasters and Back Country Navigator. Some of these maps require an additional download of Garmin GPS navigation software.
Snowmobile maps that require Garmin GPS navigation software appear identical to those on a Garmin GPS device. GPS Trailmasters sells snowmobile and ATV maps for New Hampshire, Maine, Quebec and all of New England, among other choices. The company also provides updates to maps and hardware to mount a smartphone or GPS device to a snowmobile. Back Country Navigator's maps are created by US Trailmaps and include almost 200,000 miles of snowmobile trails.