Quite buggy
Seems to have many crashing bugs on 5S with latest iOS. If left running in background for more than a hour or so, guaranteed crash. Just panning and zooming, frequent crashes. This even with only the base maps installed. Unusable until these bugs are fixed.
UPDATE: New version loaded today (1.4.0). This seems to cure the crashing bugs. However be VERY careful of in-app purchases. The screen looks correct, area looks correct, but after you enter your password it will ask you to confirm that you are about to purchase something entirely different than what you selected. I tried this for 5 different areas, after rebooting, etc. with exactly the same result. For example if you select US East Coast and Bahamas, it will ask you to confirm that you want to buy US West Coast and Hawaii.
Could be an OK app, but they need to invest in at least a modest QA effort. Having customers do it is not good business in the long run.
ASH26E L6 about
C-MAP Plan2Nav