The document discusses several key differences in iOS app development compared to other platforms, including differences in Xcode and its support for concurrency and automation, differences in Objective-C and its use of services and testing frameworks, differences in app distribution channels and maintenance, and differences in planning for the future of iOS apps with long-term maintenance options.

1. iOS App Dev
Everything is different

2. Everything is different
● XCode is different
○ concurrency
○ automation
● Objective-C is different
○ services
○ coverage
● Distribution is different
○ channels
○ maintenance
● The Future is different

3. XCode is different
● Concurrency
○ challenge: xcodeproj
○ solution: workspaces & static libraries
○ challenge: machine generated files
○ solution: delegation & communication
● Automation
○ Hudson + Ant
○ Provisioning

4. Objective-C is different
● Services
○ contract-driven dev
○ neither chunky nor chatty
○ getting a connection
○ parsing
● Testing
○ OCUnit
○ metrics
○ UI Tests

5. Distribution is different
● App Store ● Ad Hoc
○ now ○ For testing
○ one month out ○ TestFlight
○ two weeks out ○ TestFlight-Fu
○ one week out
○ launch day
○ a month after
● Enterprise
○ gotcha!

6. The Future is different
● Long term maintenance options
○ perpetually compatible app
○ app store version roulette
○ exotic distribution methods
○ the swiss army app
○ A non-option: the perpetually compatible server
● iOS keeps changing
● Volume licensing program