Use APKPure App
Get Pebble Phone Ringer Switcher old version APK for Android
Use your Pebble Watch to control your device's Ringer Modes.
Use your Pebble Watch to control your device's Ringer Modes. Require Official Pebble Watch App to be installed.
PBW developed with cloudpebble.net
Tested on Android 4.1. Should work with Android 2.3 and above.
Source on github.com/ruqqq