Apple's new iOS5 Reminders feature
Just announced at Apple's WWDC, would it be fair to say that this is a disaster of a non-GTD feature that Apple have just created. It's the classic to-do list combined with dates, which would just get pushed back each day you don't complete the to-do list.
What I find weird about this is that I actually got into GTD via various Apple-related podcasts which talked about David Allen, from people such as Merlin Mann. The Apple community is one of the most GTD-aware groups out there.
I just installed Pocket Informant
I just installed Pocket Informant on my iPad and am quite happy with it so far. It's task list syncs with ToodleDo, and the calendar will sync with Google Calendar or the built in iOS calendars.
The task preferences let you turn on either Franklin-Covey, GTD or Traditional. And you can set tasks to default to no priority and no due date, which is nice. At $15 it's not cheap, but it was cheaper than the $20 Action Lists I was looking at that only did Lists and no calendar.
I also checked out Todo. Though a very nice looking app, the fact it would not sync the Toodledo Status field left me wanting, since I use Due Today on my Fascinate (Android) and the ToodleDo website and Task Unifier from my home or work computer, so I needed something that would sync ALL ToodleDo fields and not force me to use tags.