monome

I used cleartune on the iphone, but it's not free. Or, indeed, on the mac. So this isn't much use.

something like these?

http://www.katsurashareware.com/chromatic/chromatic.html

http://tuneit.free.fr/Site/Home.html

oh cool, yeah something like that. i found the tuneit one yesterday actually, must give these a bash. ta.

Don't faak around. Get the best:

http://www.petersontuners.com/index.cfm?category=143