Any app like this...

[newtotipb]

I just saw "Remindyou" for jailbroken iPhones.
Make Your Day Media :: Makers of RemindYou®

Is there anything like this for non-jb phones. This exactly what i've been looking for. I really would rather not JB my phone just for this app.

Among other things, I'm looking for a todo/task manager with the list on the lock screen.

Any ideas?

Thanks