The first personal ToDo reminder utilizing the newest Apple's Push technology available only on the iPhone OS 3.0. NotifyMe lets you quickly create personal reminders, notifications and alerts with easy snoozing when needed. With New reminder screen on startup and auto-keyboard option enabled, you are only two finger taps away from setting a new timed reminder with optional sound notification. [Full version] -- $3.99 [Free] -- 20 sec nag screen, max 3 reminders
You can try the Free version. It's fully functional except for the nag screen everytime you load the app and the max of 3 reminders. I've been using it for a day and it's pretty good so far Much faster and more convenient to set reminders as compared to setting an alarm or a calendar event.