With Hectare.app you can easily survey your land with the iPhone. Just walk along the area and you're done.
Hectare.app can export recordings as GPX-Files.
Some applications require Shape-Files (.shp). To convert GPX-Files to Shape-Files please use the following page.
Send your surveys as GPX files via Email
Hectare.app support not only Hectare, but can also measure in Acre and Square-Kilometers
Send a mail to firstname.lastname@example.org