Very useful

Used to use this before I had a data plan. It works quite well with straight forward addresses, but some street names that have numbers in them can be troublesome. Using wifi or 3G data to save locations before a trip greatly improves address finding due to the incorporation of Google searching. It stalls sometimes on my older iPhone 4S, but that usually means its time to give the phone a reboot. Nicely lowers the music when giving directions. Lots of great options and features.

Kspeckma about Navmii Offline GPS USA, v3.5.3