Tapp Bell Ring Door

Tapp Bell Ring allows you to create QR-code digital bells which can be rung by scanning QR codes followed by a conversation on real-time with the owner.
You can have your bells on multiple devices and you can add your family members, housemates, colleagues, etc. to your bells so that they can also hear the bells on their devices.

You can easily add Ring Bells activation codes from this app. Install and manage your Bell Ring QR-codes