Just as a point of interest... The WiFi only iPad has no GPS receiver and as such is incapable of picking up the orbiting global positioning satellites that make up the Global Positioning System (GPS).
The WiFi only iPad determines its location by detecting nearby WiFi hotspots and then using them to determine its position. When you activate 'Location Services', you are not activating GPS.. The WiFi system works well in populated areas where there are a lot of hot spots about, but the accuracy drops rapidly as you move away from major centers.... If you ever go out in the boonies with no WiFi spots available, you won't be able to determine your position.
I don't think any of the dedicated GPS apps will work with a WiFi only iPad because it has no GPS receiver.