Hi all, I've just recently created an iPhone App to help drum tuning. It analyses the sound of the drum and tells you the fundamental frequency. There is also a display to show you the frequency spectrum, so you can pick out the frequencies of overtones too if you like. Initially it's in the iPhone App Store for just $1, so if you're interested please try it out and let me know any feedback please.
You can find it by searching 'idrumtune' in the iPhone app store. It also works on iPod touch. Or direct link here: http://itunes.apple.com/us/app/idrum...6124?ls=1&mt=8
There's a YouTube video of the software in action here (beta version demo before spectum view mode was introduced): http://www.youtube.com/watch?v=tnOeLSqbmhg
And we're on Twitter here: http://twitter.com/#!/idrumtune
Hope you like, would love to hear some feedback :)