Jeroen van Rijn
I love to write tutorials for Tuts+ and share my knowledge of iOS SDK development. I currently have several products in the App Store. My favorite is called Play It. Check it out! It's a fun and useful app to control your music with innovative yet simple gestures.
Tutorials
iOS Quick Tip: Create a Dynamic Action Sheet
iOS 6 and the Social Framework: Twitter Requests
Build an iOS Music Player: UI Theming
Build an iOS Music Player: Player Controls
Build an iOS Music Player: App Setup
Build a Simple Photo Gallery with UIGestureRecognizer
iOS SDK: Send E-mail In-App
iOS SDK: Working With NSUserDefaults
iOS SDK: Game Center Achievements and Leaderboards - Part 2
iOS SDK: Game Center Achievements and Leaderboards - Part 1