I did a search and didn’t really find what I wanted. It looks like most of the app discussions center on apps that hook up to your bike. I’m looking for an app that shows bike trails and helps you navigate them. I downloaded one called Alltrails. It’s ok but I’m wondering if there is something better. Free is nice of course but I would pay for one if it was really good.
For finding and navigating "real" MTB trails with my phone, I'm partial to
Trailforks (link to website version of their map). In my experience - albeit mostly in my region (New England) - the app is easy to learn and use, and trail systems are accurately laid out. Its GPS tracking works well on my Android, and because it's a volunteer-run outfit that (kind of) supports eMTB access to MTB trails, I purchased the premium version.
Trailforks tends to focus on singletrack, however, and sometimes my explorations take me to ATV trails, fire/logging roads, etc. that aren't shown on that app. For those, I've found that apps with maps that use
Open Street Maps and/or
Open Cycle Maps as their basis are the most comprehensive. OSM/OCM are somewhat akin to Wikipedia in that they're "...created by people like you and free to use under an open license." I've actually made some edits when I saw inaccuracies. There is an app called "
OsmAnd" that allows for offline use, but the free version seems clunky to me, and its base map layer is difficult to decipher.
I've never tried OsmAnd's paid version because the free version of the
MyTrails app, which seems to only be available for Android phones, works well enough for my purposes. It has multiple map layers available - I find the
4UMaps option, which is based on OSM/OCM, to be the easiest to read by far, with thick red lines on white and light green backgrounds. Pasted below is a wide screenshot showing its depiction of systems surrounding me - when you zoom in, it shows most trails' names, as well (second screenshot). The MyTrails app also does a good job of tracking my rides, though I still prefer using Trailforks' tracking, even when riding trails they don't show.