The Fitbit Flex also works with newer Samsung Android devices. But I'm sure Fitbit put in a LOT of time developing around the Samsung Bluetooth Smart API's. A

The Fitbit Flex also works with newer Samsung Android devices. But I'm sure Fitbit put in a LOT of time developing around the Samsung Bluetooth Smart API's. And all that will have to be re-written when Google FINALLY comes out with standard Bluetooth Smart support in Android. Most companies are just saying "Why bother?" until Google gets their act together. As a side note, Apple joined the Bluetooth board over TWO YEARS AGO, and since then EVERY Apple device released has had integrated Bluetooth Smart support. THAT's what commitment to a hardware platform looks like.