Pystone might also be interesting for benchmarking. It's included in the beta, so you can simply runfrom test import pystone pystone.main()
(if you're not in the beta, you can simply copy/paste the pystone module I linked above, it's a single file.)
I recently got my new iPhone 6s, and the performance improvements are quite remarkable. I now get pretty much exactly the same result as on my (2012) MacBook Pro, i.e. around 115,000 pystones/second. On the iPad Air 2, it's around 60,000.