Positional: Easy GPS & Compass is a free and open-source app that provides you with your GPS coordinates, elevation, speed, bearing, direction, and accuracy in various formats. The app is designed to give you the fastest possible location with the most accurate possible location using GPS, cell towers, and wifi to determine your location.

One of the best features of Positional is its versatility. You don't need a great signal from GPS to use it. If your device has decent cell or wifi reception, Positional can use it to determine your location as well. This means you can get your location in situations where GPS signals are spotty, such as bad weather or inside buildings.

The app also has a magnetic north compass, which can show you both magnetic and true north. Additionally, it provides you with sunrise and sunset times, civil, nautical, and astronomical twilight times, and supports 12-hour and 24-hour time formats. The app is available on Android devices and is completely free, without any ads.

Overall, Positional: Easy GPS & Compass is a simple and accurate app that provides you with all the information you need about your current location. If you're looking for a reliable open-source GPS app, this is definitely worth checking out.