Reverse engineering the protocol and placing such applications on Google Play and Windows Store?

Question

reverse engineering

I want to reverse-engineer the proprietary protocol of one of the devices connected via bluetooth. In case of a successful result, an alternative application will be written, including for the unsupported WP8 platform.
In this regard, I would like to ask in advance. How will Google Play, Windows Store react to the appearance of such an application (with reverse engineering and unofficial support). What can an official manufacturer do?

Answer 1

Alternatively:
https://jsfiddle.net/edalis/fruryxyv/