Please download the final V1.0 of our API here: http://resources.arcgis.com/content/arcgis-iphone/api Best way to transfer data between an iOS device and ArcGIS Server would be to use AGSFeatureLayer: 1. Following document talks about Feature layer: http://help.arcgis.com/en/arcgismobile/10.0/apis/iPhone/concepts/index.html#/ArcGIS_Feature_Layer/00pw0000004s000000/ 2. Following is a link to a sample that you could try it our at your end: http://www.arcgis.com/home/item.html?id=2ddb261648074b9aabb22240b6975918
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