Navmii GPS World is an offline and online GPS navigation app that uses OpenStreetMap. It is free to use but does include in app purchases that range from $2.28 - $42.43 per item.
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Pro Works good for hands free navigation
Navmii GPS World (Navfree) has voice guided navigation for its maps, even offline so users do not need to mess around with the app while driving, which is safer than having to constantly look at ones device.
Pro Convenient offline support
Navmii GPS World (Navfree) uses OSM (OpenStreetMap) data which means it stores the maps on local storage so the user can use the app offline with zero data usage. This is great for those that need to use a navigation app but will have no data connection.
Con Quality of images not the best
The quality of images in the app are sometimes not the best . It is caused by some form of conversion, which may save room but limits the apps looks.