Firewall review
A focused iPhone call filter with voicemail tools, but no free plan or Android support.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Firewall is an iPhone call-management app from Ad Hoc Labs for people who want to reduce robocalls, spam calls, and unwanted callers. Its whitelist-based modes let users control which calls ring through, while unknown or non-whitelisted callers can be sent to voicemail. The app also identifies callers through number databases, transcribes voicemails, blocks SMS spam, and supports calling from a temporary number. It is designed for iPhone users who want screening and voicemail features in one focused app.
The product’s main strength is the depth of its call-handling tools. Known robocall blocking works alongside customizable whitelist modes, unknown-caller screening, custom voicemails, caller identification, and voicemail transcription. This gives users several ways to manage calls beyond simply blocking recognized spam numbers. Temporary-number calling adds another privacy-oriented option, while SMS spam blocking extends protection beyond voice calls. The feature set is concentrated on reducing interruptions and giving users more control over how unfamiliar callers reach them.
Pricing is straightforward: the Subscription plan costs $3.99 per month and includes robocall blocking, a customizable whitelist, customizable voicemails, and calling from a temporary number. A 14-day trial is available, but there is no free plan. Firewall currently supports iPhone only, which limits its fit for households or teams using multiple mobile platforms. Setup also includes carrier call forwarding, so the onboarding process may require an extra phone-service step. Choose Firewall if you use an iPhone and value voicemail screening, caller identification, and configurable call modes. Consider another option if you need Android support or a free tier.
Firewall pros and cons
- Where it wins
- Blocks known robocalls and SMS spam
- Screens unknown callers to voicemail
- Adds caller ID and voicemail transcription
- Where it doesn't
- Available only on iPhone
- No free plan; subscription costs $3.99 monthly
- Setup includes carrier call forwarding
Firewall fact sheet, pricing and score →
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