Apple's M7 vs. Google's Fused Location
iPhone 5S has the new M7 Motion chip to make sense of all the different sensors and provide apps with the ability detect when your walking, running, driving etc. It's available on the latest and greatest phone from Apple.
At IO13 Google announced the Fused Location Provider which does the same thing and is part of Google Play Services. It's available on all the phone that support Google Play Services. How many devices support Google Play Services? Anything running 2.3 or above.