there's an open-source companion app already, called Cobble. https://github.com/pebble-dev/mobile-app https://github.com/pebble-dev/mobile-app Core Devices wil

there's an open-source companion app already, called Cobble. https://github.com/pebble-dev/mobile-app https://github.com/pebble-dev/mobile-app Core Devices will publish an open source fully featured library, that anyone can use to build an open source companion app as well.