If you need to recover the data stored in iGIS, you can retrieve it from your iPhone or iPad.
iGIS uses two sqlite databases; spatial-store.sqlite and Projects.sqlite. If you retrieve these files they can be used as a permanent backup or sent to Geometry for fault finding purposes.
Since 8.3.10, you can get these database files off your device using iTunes, with your iPhone/iPad connected to your computer, open iTunes File Sharing:
Select iGIS (or iGIS HD) as the Apps under File Sharing:
Select the database directory and drag this to the desktop (or another file location). This will copy both the Projects.sqlite and spatial-store.sqlite to your PC/Mac.