I love apps that I can get into quickly, apps that are intuitive and designed well. I also love POWER and depth in my apps that allow me to really harness computing and make me better. When an app can do all of these things for me I know I have a gem. OmniFocus is a gem.
You can use OmniFocus to make simple grocery lists, or geofenced contextual sequential projects within multiple perspectives. Yes, OmniFocus can do everything. Dont let that scare you. Start simple and as needed built to more complexity. You will never hit a capability ceiling.
P.S. OmniFocus has a great free companion app for Apple Watch. Seriously awesome.
Damonius907 about OmniFocus 2