Since the arrival of smartphones and the internet (I know this dates me lol), we've all become increasingly dependent on them to do lots of stuff. One of the most important and useful for travelers is navigation. So those maps that we always collect (still do) at rest areas pretty much stay in the pocket at the side of the car door, because we use smartphone navigation. When we do open the good old map, those of us above a certain age quickly remember why we like the phones so much - the map lettering is too small, not enough detail, can't see it at night, etc etc.
When we're at home with a good data plan, the smartphone is excellent for navigation. But when we go abroad, or even into the backroads or on a nice forest walk in the middle of nowhere, we can suddenly find ourselves without data ... or not wanting to pay extreme rates for local data plans. In the USA, this can even happen in developed areas, where there just isn't any tower coverage. The usual smartphone navigation is just not 100% reliable because it usually needs mobile data to work right.
Being a back street, far away places nomad myself, and being a hardware/software engineer, I decided to make myself a navigation tool that would work anywhere and any time, even if the phone is in airplane mode. I'll keep it short and just refer you to GooglePlay, where Poynterra Navigator was just posted. Check it out at https://play.google.com/store/search?q=poynterra&c=apps
. This app is full of features that you'll find useful - and indispensable - as time goes on. When you do have a wifi connection, it can search for the coordinates of the points (waypoints) you want to visit and put those points in a folder. If you display them on the built in map, they'll continue to show up in that resolution even when you go into airplane mode (to save battery!). Points can be easily added on the go, even in airplane mode. The whole thing is also a sophisticated waypoint management system that lets you save information about waypoints, share folders with others, download special collections of waypoints, etc. I'm pretty proud of it and can't live without it now.
Again, check it out at https://play.google.com/store/search?q=poynterra&c=apps