I have noticed this before about Navionics - one apps seems to sometimes affect the others. Shared data structures?

There is no doubt that the old apps do not run on iOS7 - every one of them failed and Navionics says they won't run on their Facebook site. I can't go back to iOS6 because the 5s comes with 7 and will only run 7. I can start up the old ones, but zooming around a little and the screen does not refresh, eventually it says the app is two years old and won't run and you need a new one. Once I removed them through the sync process, a couple of things appeared in the new one