Do not buy if you will use outside US waters
This app is misleading. If you need charts outside US NOAA charts you will have to get an account with X-Traverse and buy their very expensive charts (two chart sets for Vancouver Island are $300) and then go through a kludge import process to iNavx. Not cool. Avoid this BS, there are other better apps.
yossarian09 about
iNavX: Marine Navigation, v4.7.4