As author of the business time-management book The 26-Hour Day, I came across this app last week and have absolutely fallen in love with it!!! Its simplicity, power and inviting interface allow me to create and management my tasks better than any list process or list app I have tried before.
When I emailed a suggestion about adding a weekday only repeat to a task, the developers responded to me within 30 minutes and kindly showed how that feature was already built in. Super responsive!
I strongly recommend Doo to anyone looking to improve their productivity or spice up their current organizational tools.
Vince
Navy Air Daddio about Doo - Get Things Done, v1.3.0