Refining the mobile application

The services of a mobile application developer are required. There is a source android application on the ketchlin, which in recent versions is not supported on all devices (hangs when connected to the BLE sensor / device). The work is mainly carried out with a bluetuz module - parsing the adverts of the connected BLE sensor / device, controlling this sensor / device. Requires refinement, fix and constant support, as will be released new devices, sensors, will be updated old, you need to update json.
You need to evaluate your capabilities in this field and the whole work.
We can provide full raw packets of device/sensor adverts.