GTM Sauce

B2C · robocall blocking app

How Firewall grows

1 tactic from 1 interview.

About Firewall

Outcome
Never got traction; effectively killed when Apple shipped Silence Unknown Callers; never reached Android

As described in the interviews, not independently verified.

Firewall's tactic

Firewall · B2C · robocall blocking app

Launch separate robocall-blocking and business-number apps
Neither got real traction; one was killed by an Apple feature

Ad Hoc Labs built Firewall (robocall blocking) and Dialed (business phone numbers) as standalone apps with full launches and hardening, competing against incumbents like RoboKiller. Firewall was sherlocked when Apple shipped Silence Unknown Callers and never reached Android.

Failedportfolio
Sub Club by RevenueCat · 2025-12-10

Topics

Running a portfolio of apps1

Interviews