Original submission: http://news.ycombinator.com/item?id=2845158
For our app (Paprika Recipe Manager - http://itunes.apple.com/us/app/paprika-recipe-manager/id3924...), iPad sales are 4-5x the iPhone sales. Based on the type of app this makes a lot of sense: cooks want to use an iPad in the kitchen, an iPhone screen is too small.
But then I know there are a lot of other apps where the numbers are completely reversed.
The other thing I'd be interested in seeing is if someone did a study on the buying habits of iPad vs. iPhone (heck, lets generalize and say tablet vs. smartphone) application buyers. I have a feeling we'd see more apps being purchased in the smartphone arena as people buy-try-dump apps on the go, whereas there'd be a more stable market in the tablet space where people research which apps to buy because they use the tablet for longer durations.
I just need to find some time to actually build these versions!