What's the best Android app for navigating offline with custom maps, tracking routes, and marking locations without needing cell service?

Avenza Maps: Offline Mapping is an excellent Android app for offline navigation, allowing you to use custom maps, track your routes, and mark important locations even without an internet connection. This is especially useful for hiking, camping, hunting, and other outdoor activities where cell service is unreliable or unavailable. With Avenza Maps, you can download maps of specific areas and then use your device's GPS to pinpoint your location on the map. You can also record your tracks, add placemarks, and measure distances, making it easy to navigate and stay oriented. To use custom maps, you can import GeoPDF, GeoTIFF, and other compatible map formats into the app. Many parks and wildlife services provide digital maps that can be directly imported. This ensures you have accurate and up-to-date information for your outdoor adventures. The ability to operate entirely offline makes Avenza Maps a reliable tool for anyone venturing into areas with limited or no connectivity.