PhotoGPS allows you to record your journey by taking photos. As PhotoGPS records all of the location data along with your photo, you can export this data in a file for GPS apps and devices. A perfect addition for marine navigation; take a photo of a landmark, and then plot the latitude and longitude on your chart along with the saved heading. As you decide when to use, you do not flatten your phones battery by continuously recording GPS data. You can also import photos from the Photos App.