Requirements: varies with device 
Size: 4MB 
Rating: 4.6/5
Type: Travel 
User review: 
 A wealth of maps to choose from. This app is great for planning hikes and navigating in the field. I import GPX files before every trip. It allows creating a route directly from the app.  
 Features of All-In-One Offline Maps + (full):
 This Paid/Plus version includes all features of the Standard version without ads, and supports import of professional GPS and geographic landmarks file formats like GPX, Google Earth KML/KMZ, OziExplorer WPT, CVS/TSV and Geocaching LOC
 A lot of maps are available, including classical road maps, topographic maps, aerial (satellite) maps and various layers that can be added over any maps: OpenStreetMap (Roads, Topo), USGS National Map (Hi-res topo, Aerial imagery), Worldwide Sovietic topo maps, Google Maps, Bing Maps, Yahoo Maps, Yandex Maps, and various per-country topo maps (incl. Europe, UK, Spain, Italy).
 – All maps can be stacked in layers, with precise opacity control.
 – Select and store large areas in few clicks.
 – Stored space is clear and can be easily deleted.
 – Display, store and retrieve unlimited landmarks
 – On-map GPS Localization & Orientation
 What’s new in version 2.2
 (November 12, 2015)
 – Added storage workspaces allowing to store temporary data and to clear only parts of the map storage;
 – New measure tool to quicky compute distances and bearings between any points;
 – Continuous map display towards east and west;
 – Improved on-map heading icon;
 – Improved favorite maps and sets;
 – Various improvements and bug fixes.
 – Improved support of Android 6.0 (Marshmallow);
 – Various improvements and bug fixes.



