The only issue I have with the blackberry is the size of the screen. However, I may consider doing one for the blackberry first depending on the palm pre. Also if I knew people want one more for the blackberry over anything else I would do it for the blackberry. The other thing is all the new technology comming out will soon make the blackberry a hand held rock. But, like I said, genetic diseases don't target people based on their income. So the biggest motivating factor for me is what everyone else wants. Leave me a message for the portable device you would like an app like this for.