Gatekeeper: SMS & Call Blocker

36 reviews
Content rating
Everyone
1K+
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Content rating
Everyone
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About this app

Stop Spam. Silence the Noise. Reclaim Your Peace with Gatekeeper.

Are you overwhelmed by an endless flood of junk SMS, relentless telemarketing calls, and sophisticated phishing attempts? In a world where our phone numbers are constantly shared and leaked, your smartphone can feel like a gateway for scammers. Meet Gatekeeper—the most advanced, AI-driven shield designed to sit between you and the noise. Gatekeeper isn't just a filter; it’s your personal digital bodyguard.

THE PROBLEM: WHY STANDARD FILTERS FAIL
Most spam blockers rely on outdated, static lists of numbers. Scammers know this. They use "neighbor spoofing" to mimic local area codes, change their caller IDs every hour, and replace letters with symbols (like "fr33" instead of "free") to bypass basic keyword filters. If your current blocker is only looking for exact matches, it’s already obsolete.

THE SOLUTION: THE GATEKEEPER AI ENGINE
Gatekeeper uses a state-of-the-art Neural Intent Engine. Instead of just looking for words, it analyzes the "intent" and linguistic patterns of a message. It understands when a text is trying to create a false sense of urgency or redirect you to a malicious link.

Smart Pattern Recognition: Our AI identifies the subtle tricks scammers use, from hidden characters to complex sentence structures.

Evolving Protection: The more spammers innovate, the smarter Gatekeeper gets. Our engine evolves daily to keep you one step ahead of the latest fraud trends.

UNMATCHED CUSTOMIZATION: YOU ARE IN CONTROL
While our AI works in the background, Gatekeeper gives you the steering wheel to build your own fortress.

Custom SMS Blacklist: Create unlimited personalized rules. Want to block every message containing "Crypto," "Loan," "Prize," or "Investment"? Just add the keyword, and Gatekeeper takes care of the rest.

Smart Filter Technology: Our proprietary Smart Filter scans for millions of potential character variations. Whether they use "0" instead of "o" or Cyrillic symbols that look like English letters, Gatekeeper sees through the trickery.

Prefix & Area Code Blocking: Tired of robocalls from a specific country or city? Block entire ranges of numbers or area codes (e.g., +1-800, 0850) with a single rule.

Call Management: Instantly silence persistent telemarketers, fraud attempts, and "No Caller ID" harassment. Decide who can reach you and who stays out.

PRIVACY: YOUR MESSAGES NEVER LEAVE YOUR DEVICE
Most "free" spam blockers make money by selling your contact list. Gatekeeper is different. We believe privacy is a fundamental human right.

Local Processing: All filtering, AI analysis, and rule matching happen 100% locally on your device.

Your Messages Stay Private: We never upload your messages to the cloud. We don't track your calls. We don't even know who is calling you. Your messages stay where they belong: on your device.

BUILT FOR EVERYONE

For Professionals: Don't let a spam call interrupt your meeting or an unwanted SMS clutter your workflow.

For Families: Protect your elderly parents or children from phishing links and financial scams that target vulnerable users.

For Minimalists: Set it and forget it. Gatekeeper works silently in the background without draining your battery or showing intrusive ads.

EASY 3-STEP SETUP

Download & Open: Get Gatekeeper and start your journey to a cleaner digital life.

Enable Permissions: Follow our simple guide to allow notification access and to choose Gatekeeper as your "Caller ID & spam" app in your Android settings.

Configure Your Rules: Start with our AI defaults or add your first custom keywords.

JOIN THOUSANDS OF SECURE USERS
Don't wait for the next scam to hit your inbox. Download Gatekeeper today and experience the tranquility of a phone that only rings for the people you care about.
Block Spam Unwanted SMS & Call, Filter Them All Easily
Updated on
Oct 7, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    App activity and Device or other IDs
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

36 reviews
Mary A C
July 30, 2026
New to this android app. So far it is the only one avaiable, and it seems to actually work. Smart of the creator(s) to see a need for a text "word" blocker where others rely on common cell number blocking. It is simple & easy to use. No third parties involved at this time, but caution always required!
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Zade Tech
August 3, 2026
Hi Mary — thank you so much for the kind review! We’re really glad Gatekeeper is working for you and that the keyword/content blocking is useful. Feedback like yours means a lot. Stay protected!
trdsf
September 18, 2026
Very hit and miss blocking SMS spam. I filtered out two area codes completely but some junk texts from those numbers still get through. It also doesn't filter out the keywords I gave it.
Did you find this helpful?
Zade Tech
October 4, 2026
Thanks for the detailed feedback. Prefix rules need the country code: for a US area code like 213, enter 1213 (it becomes +1213). Also, chat/RCS messages may not pass through SMS filtering. If it still fails, email keepertechstudio@gmail.com with an example message and your phone model and we'll look into it.
sfh074
July 24, 2026
Useless call blocking app since it doesn't allow a wildcard for caller id. i need to block an area code. app doesn't allow for this. however you can do this for sms texts. Uninstalled
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Zade Tech
August 3, 2026
Hi — thanks for the feedback. We never promised area-code/wildcard call blocking. On Android, call screening only works with full numbers (country code); short SMS-style prefixes aren’t available for calls without going beyond on-device screening. SMS prefixes still work. Sorry it wasn’t what you needed — a 1★ for an unadvertised limit feels harsh.

What’s new

Improvements and bug fixes.
Content rating
Everyone
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App support

About the developer
ZADE TECH YAZILIM ANONIM SIRKETI
support@zadetech.com
Ataturk Mahallesi 537. Sokak No:4 Guzelbahce 35310 Izmir/İzmir Türkiye
+90 507 724 38 80