No option to save missions on the iphone app. Is this intended?
The save option will come very soon on iOS. It is a top priority.
Note however, even if you close Pix4Dcapture, force quit Pix4Dcapture and even reboot the device, the flight plan that you designed will remain on the Map view when re-opening the app.
Regarding the base map, the background is automatically cached for 2-3 days depending on how the temporary memory of the device is used. You can take advantage of these temporary background maps to plan flights without Internet connection.
When is about Mission Save option update?