When you're trying to find a hotel or a restaurant you need to go to, you can search your map without any internet connection. There's also a very useful auto-suggestion function that makes searching easier, especially when you're not too familiar with the names or the spelling.
Since this app uses data from OpenStreetMap, the data retrieved is a community-based map that anyone can freely edit. This means you get a map that has a high level of detail and is updated with thousands of points of interest.
All you have to do is to download the maps you're going to need, then you'll be able to use it when you need it, even if you're offline. You can even create driving, walking and cycling routes.
The use of OSM also has the drawback of many places not getting the attention needed for updates. Depending on the geographic location or popularity of a place, OSM may have the most detailed maps or the most bare/outdated map.
Needless to say that these features will give you better and more up to date feedback when you're online, but you can still use it on offline mode. You can think about alternative routes or which public transport would be best for you to use, so you'll always have choices.
Another good thing about this app is that you can download a map of an entire country of just a specific region, such as a province or state. So if you won't be needing a complete map, this will save you a lot of storage space. But you should check the file size when you're planning to download several regions because you may end up with a bigger file compared to just downloading the map of the entire country.
It has a very convenient turn by turn voice guidance so you can keep your hands on the wheel and be stress-free while you're driving. If you just plan on walking or commuting, then you'll be able to know every step or transfer that you need to take and when.