Blaze.io.

Blaze.io Mobile Performance Test:

Blaze Mobile Performance Test uses real iPhone and Android agents to conduct a performance analysis of browsing your website on a mobile device.

In the single test I ran (United Pixelworkers), the page didn’t appear to load at all and the numbers seem a bit funny. Once they work out the bugs, this will be a useful tool for mobile development.

(Via Steve Souders.)