Well we do have engineering resources on iphone, and have been doing iphone app dev for quite some time. Here's what we've done and issues we're having: (http://news.ycombinator.com/item?id=466840).
Check out our site for more info: www.BokanTech.com/iphone/
Just browsing iphone apps among "Top Paid Apps" or "Top Free Apps" in related category on iTunes and find out what you like. Contact the company or author.
At least that's how our customers find us. It's a bit sound like I'm selling myself. But in case you're interested. here's what've done on iphone with a few highlights & my questions (http://news.ycombinator.com/item?id=466840).
Actually this game is intended to be played by kids under watch of their parents or tutors. My personal experience and comments from current users show that a lot of kids just like it and it's hard for me to get my iPhone back once my kid start playing it. There's definitely a market for it, as we have seen thousands of downloads after "Cute Math" being featured on iTunes in less than one week. But the market might not be big, as you point out.
However, we’ve learned our lessons and done much better with “Cute Math”（http://ibokan.com/2009/about-cute-math/) and “Eye Test“ (http://ibokan.com/2009/testing-your-eyesight-handily/)
The graphics are created from our own tools that will be open to public in April. I hope you’ll check it out later.
Thanks a lot for your comments, which is really what I wanted for this post.
–Bo Wang http://www.iBokan.com