Does Firewall work with the Burner app?

You can totally use Firewall and Burner together! 

We strongly recommend that you turn on VoIP (in-app calling) for all of your Burners in the Burner app if you're going to use Firewall! This will eliminate the need to press 1 to answer calls, and will make the experience better overall.

You'll also want to make sure that your Inbound Caller ID is set to show your Burner number, and that you whitelist your Burner number. Otherwise, Firewall will block any calls that come from your Burner number.