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.
Get these database files off your device using third party software like iFunBox http://www.i-funbox.com/en_download.html
Using iFunBox, with your iPhone/iPad connected to your computer, open iTunes File Sharing:
Select iGIS (or iGIS HD) and select Open Sandbox
Select the .database directory and copy both the Projects.sqlite and spatial-store.sqlite to your PC