Great start!
This app is the newcomer and underdog in the GTD app community that shows lots of potential. My suggestion is give the ability to generate lists for review - theres no GTD without a weekly review. Secondly, fix calendar integration (currently crashes the app). Any GTD app needs to play friendly with all calendars.
Keep at it, could be great!
Michaelp6of7 about
Chaos Control™: GTD Task List, v1.8.0