Twitcher was the first iOS application that I wrote back in 2009 and launched in 2010. The subject matter allowed me to learn about iOS frameworks such as AVFoundation, UIKit, Core Data, and Core Location in a hands-on fashion.
The app utilised many features of the iPhone to make bird recognition and recording more accessible. Featuring an identification system, location-tracking, RSS feeds, maps, web-service integration, and audio playback, Twitcher was the leader in its field.
Twitcher was removed from sale in early 2014 to focus on other projects.