Spam Fortress - Call Blocker is made and published by River Technologies LLC. AppBrain is an independent app data site and isn't affiliated with River Technologies LLC. The app name, icon, screenshots and description belong to River Technologies LLC and are shown as published on Google Play.

About Spam Fortress - Call Blocker

Spam Fortress - Call Blocker is a communication app developed by River Technologies LLC.

Install Statistics

Spam Fortress - Call Blocker has been installed 310 times. In the last 30 days, the app was installed 150 times.

User Ratings

Spam Fortress - Call Blocker is rated 4.20 out of 5 stars. The rating is based on 5 ratings.

App Information

Spam Fortress - Call Blocker is freely available from Google Play. The last update was on November 22, 2025.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play since November 2025.

Description by River Technologies LLC (from Google Play)

Most call blockers make you block spam one number at a time. Spam Fortress blocks by area code instead — stop hundreds of unwanted calls at once, without ever touching your contacts.

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Screenshots

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Screenshots by River Technologies LLC, from the Google Play listing

Official page on Google Play

Alternatives to Spam Fortress - Call Blocker

Google Play Rating history and histogram

Installs over time

Spam Fortress - Call Blocker has been installed 310 times. Over the past 30 days, it has been installed 150 times.

Changelog of Spam Fortress - Call Blocker

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Developer information for River Technologies LLC

River Technologies LLC

rivertechnologies@pm.me

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Comments on Spam Fortress - Call Blocker for Android

★★★★★ Ken J · Aug 14, 2026

First app to do what it says it will do! I moved from one state to another, but DAILY I got annoying spam calls from an old area code where I lived. THIS app blocks area codes instead of you having to block individual, computer generated numbers! You can either have a notification that it was blocked or turn off the notifications if you do not want to be bothered at all. I have tried several no spam apps but THIS one wins the prize! Thank you!

Google Play Rankings for Spam Fortress - Call Blocker

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Technologies used by Spam Fortress - Call Blocker

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