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Firewall is the only app that can handle the state of spam calls today.

Most robocall blocker apps try to determine which numbers spammers use, but spam callers and robocallers switch numbers and use fake Caller IDs to get around those blockers. Firewall works the opposite way. You create a list of people from your contacts who you want to hear from, and only those approved callers can ring through. All other callers get blocked or sent to voicemail.

Firewall is guaranteed to block spam calls, fraud calls, and robocalls, but it does a lot more to help keep your number private and keep you productive:

- Avoid unwanted text messages, with our SMS spam blocker

- Eliminate disruptions from legal but annoying calls (car dealers, salespeople, etc)

- Screen messages with visual voicemail

- Pause the blocker when expecting an important call from an unknown number

- Protect your personal number by making anonymous outbound calls to unknown numbers

- Keep your privacy intact - your contacts are stored locally unlike other robocall blocker apps

- Get support from our U.S. based customer service team 7 days a week

Some of our favorite features include:

Quickly see who called and what they wanted, so you can determine if you want to call them back, block them, or add them to your allowed contacts list.

SMS spam is on the rise. Flip on Firewall’s SMS filter to keep scammers and marketers from polluting your messages with unwanted texts.

Firewall is built by Ad Hoc Labs, the same company that makes Burner, the award-winning 2nd phone number app. We build privacy-first communications tools, and unlike many other companies, we value privacy above all else. We would never sell your data or compromise your privacy.

Firewall is free to try for 14 days - we know you’ll love it! If not, you can opt-out of the subscription during your free trial and won’t be charged. Once your free trial ends, your subscription will automatically renew at $3.99/mo with no commitments. Cancel at any time. Firewall is only available for Verizon, T-Mobile, AT&T, and Sprint customers.

Firewall robocall blocker lets you block unwanted calls and puts you back in control of your phone. Here’s a little about why people love us:

“Kryptonite for unwanted calls” - Macworld
“My phone hasn't rung once. I couldn't be happier” - CNET
“A radical option to crack down on robocalls” - Axios

Terms of Service: https://www.adhoclabs.co/terms-of-service
Privacy Policy: https://www.adhoclabs.co/privacy-policy

What’s New

Version 1.2.5

A few small bug fixes and performance improvements. Let us know how we're doing: support@tryfirewall.com.

Ratings and Reviews

4.3 out of 5
1.5K Ratings

1.5K Ratings

Annajewels ,

LOVE♥️ But problem with SMS blocking part..so 4 stars.

As far as them stopping the calls from coming in....ITS BEEN WONDERFUL!!!!! Everyday I would get 7-10 a day!!! Most coming from the same cities in the USA!! It’s heaven not running to see who is calling, or just hearing the phone ring that many more times a day, then having to go into the phone more to block the number and add it to the HUNDREDS I’ve already blocked but they have tons more to use so I have block more!! It’s a lost cause trying to think you can stop it by your own self blocking these “PITA’S” just go for the small fee per month, it saves so much aggravation and time!!
BUT..on reason for 4 stars...I opted for blocking spam text messages, but They still come through. I don’t know if there is something else I need to do on my end to completely stop them or if they need to take more steps to ensure they are not getting through. If you don’t mind that, then by all means save the misery of those annoying machines calling you all day and night long!

Developer Response ,

Hi there, we're so glad you're having a great experience with the Firewall app! Thank you for your thoughtful review! We'd love to take a closer look at the SMS filtering trouble you've been having. Just send us a message at support@tryfirewall.com!

CosmosStar43 ,


I’m very hesitant about downloading any app to my phone without reading reviews, fine print, etc. I took the chance of downloading this app after reading positive reviews... I was desperate to find an app to block all of those pesky Robocalls. Well ! I am very pleased to announce that this app blocks everything that you don’t have listed in your contact list on your phone. My phone has been so quiet .... except for calls that I do want and know. It also lets you know what numbers are known Robocallers ... scans unknown numbers ... and just scans and blocks everything! I’m on the trial period for using this app, but for the very low monthly fee they charge afterwards it is definitely worth it!!!! I recommend everyone download this app!

Thank you so much developers!

Developer Response ,

Hi there, thank you so much for your review! We are so happy to hear how
much you love Firewall and how well it's worked for you!

Drscooby68 ,

The perfect app!

I’m still in the trial period, but if it keeps working the way it has been so far it will be worth the 4 bucks! I had to change my number because my phone was blowing up with unknown numbers. I tried 2 other apps and they didn’t do what I wanted. I’m a private person; I don’t want anyone calling me unless I gave them my number. This app is a dream! Strange numbers don’t even ring! I have peace and quiet now!

UPDATE: My only complaint is people can’t hear me when I answer the phone. I hear them saying “hello” over and over until one of us hangs up. I immediately call them back. If that’s the only issue, it’s still worth the $4 in my case. I don’t get enough legitimate phone calls for this to be a real problem.

Developer Response ,

UPDATED: Hi there, we're so glad you're still loving the app! Regarding
your connection issue, all inbound calls are handled using VoIP instead of
your cellular network. This means that Firewall receives calls through an
internet connection like cellular data or Wi-Fi. Make sure you have a super
strong data/internet connection when using Firewall; that will improve the
call quality as well! If you have a strong cellular data network, you can
always use the switch to cell feature which will use your cellular network
for calls instead of VoIP:
Hope this helps!

App Privacy

The developer, Ad Hoc Labs, Inc, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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