I occasionally want to know where a particular distance is from my current or other location. For example, I may want go for a 1 mile walk and would like to see the "turn around" point. I like being able to create a radius of 1/2 mile (2640ft) to see where in my neighborhood I could walk to and back. Drawing the circle gives me multiple route options.
Most other mapping apps focus on straight lines, polygons, or calculating distance between two known locations. I was happy to finally find an app that also does the opposite, where I know the distance but not the locations.
The interface is elegant and intuitive. The UI fits well with iOS 8.
One feature that would be really nice is being able to select from multiple colors when drawing a radius and/or distance line from a pin. The translucent blue can sometimes be washed out, especially on satellite views or when drawing multiple circles either at different ranges or from different dropped pins.
Overall, this is a great app! :-)
DotRobbie about Distance and Radius