Not sure what all the negativity was about because BusyToDo installed as advertised, synced instantly, and works well with my BusyCal To Do list. A bit pricey for what you get, but it works flawlessly.
Update: Just got on my iPad and much to my surprise BusyToDo was installed and running there as well. I must revise my "a bit pricey" comment to "this is great"! The app on two devices for $9.99 is not bad at all. Ive always appreciated what BusyCal can do and I now have that functionality on the iPhone & iPad.
Greg Walters about BusyToDo