Update #1 of the ArcGIS API for iOS is now available!
This update (Build date 07/02/2010) has many enhancements including support for iOS 4 and development in the iPhone 4.0 and iPad 3.2 SDKs. Read about all the new features in this blog post.
The ArcGIS API for iOS enables you to build applications that utilize the powerful mapping, geocoding, geoprocessing, and custom capabilities provided by ArcGIS Server using Objective C and deploy them to Apple iPhone, iPod Touch, and iPad devices. The API includes native Objective C libraries, templates, and samples that can be used within the Xcode Integrated Development Environment (IDE).
Before downloading please read the System Requirements and Getting Started documents.
To download ArcGIS API for iOS, make sure you are signed in and then click download.