Speedtest.net Mobile is a native iOS version of the most popular broadband testing tool on the Internet. Use it to measure the network speed of your iPhone, iPod Touch or iPad.
Ookla operates Speedtest.net using a massive global infrastructure to minimize the impact of Internet congestion and latency
Linpack (iPhone) - The LINPACK Benchmarks are a measure of a system's floating point computing power. They measure how fast a computer solves a dense N by N system of linear equations Ax = b, which is a common task in engineering. The solution is obtained by Gaussian elimination with partial pivoting, with 2/3A·N3 + 2A·N2 floating point operations