Defndr: SMS Spam Blocker

Defndr: SMS Spam Blocker

AI Spam Filter for Texts

2 ratings
3 reviews
$2.99 Free
In-App Purchases

Price history


Details

  • Released
  • Updated
  • April 5, 2025
  • July 21, 2026

Features

Defndr: SMS Spam Blocker screenshot #1 for iPhone
Defndr: SMS Spam Blocker screenshot #2 for iPhone
Defndr: SMS Spam Blocker screenshot #3 for iPhone
Defndr: SMS Spam Blocker screenshot #4 for iPhone
Defndr: SMS Spam Blocker screenshot #5 for iPhone
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About

This app acts as an SMS firewall, using on-device AI to detect and block spam, phishing, and scams. It prioritizes user privacy by processing all data locally on your device, ensuring your messages never leave your iPhone. Offers both free and premium features for enhanced protection.

On-device AI spam detection
Phishing and scam blocking
Zero-trust privacy
Custom keyword blocking
Link protection
Unlimited custom block lists (Pro)
Allow lists for trusted contacts (Pro)
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What's New in Defndr

2.7.0

July 21, 2026

- New: messages are now sorted automatically into your Transactions, Promotions and Junk folders - Stronger phishing protection, including shortened links and disguised web addresses - Fewer false positives — one-time codes and delivery updates are recognized and kept - Detection now sees through look-alike characters used to slip past filters - Faster, lighter background filtering and a refined upgrade screen

More

Subscription plans

Defndr Premium Yearly

Access to all Defndr features

$14.991 Year
14 Days trial
Price Updates
July 15, 2026$14.99
August 7, 2025$11.99
May 21, 2025$7.99
How to cancel Defndr subscription ⁉️
4

In-App Purchases

$34.99

Defndr Lifetime Premium Access

Lifetime Access to Defndr Premium

User reviews

Unique Outstanding Design App!

I have found that this Unique Outstanding Design App is a great access to protecting you myself and our Family! The Developer has taken a great deal of time hard work sweat and yes love into the coding of this software so that all of us can be confident that we are secure and safe! I want to thank the Developer for an outstanding 5 Star ⭐️ App. I truly appreciate your dedication and unique knowledge for creating this app! With that Mr. Developer I Tip my Hat 🎩 to you and say “Thanks “ for all of my friends who have taken the time to read this do yourself a favor and download this Unique Outstanding Design App! I don’t believe you will be disappointed! ( really ) !!! I Thank the Developer for His offer, but I can’t take Him up on the offer Why because this is a great Unique App and there are times when Apple does an update to Help us all but sometimes this doesn’t Help the Developer instead it can mess up His Software coding that suddenly needs to be corrected! Does this make the software or App Bad? Of course not and anyone who does not understand this should not make false statements! This App does not deserve a 1 Star Review it is Truly a Unique Outstanding Design App an App that is a 5 Star ⭐️ App and I again Tip my Hat 🎩 to the Developer and Say “ Thanks “
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Response from developer

Thank you for your kind words. The app is currently undergoing maintenance due to an issue with Apple message filter entitlements which is expected to be fixed in the coming days. Please send me an email and I’ll send you a free subscription code!

Dark mode

is an accessibility feature and should never be paywalled.

Response from developer

This has been addressed in the next release which should be available for download by tomorrow. The reason for the delay is I had taken the app off the store whilst I tried to implement fixes for Apple’s consistent changing of the backend framework, I was focusing on those technical issues and as the app was not available for over one month I had not addressed the visual side of things. Please email me if you would like an annual premium code, and I would appreciate if you could re-review the app once version 2.2 is available.

Unique Outstanding Design App!

I have found that this Unique Outstanding Design App is a great access to protecting you myself and our Family! The Developer has taken a great deal of time hard work sweat and yes love into the coding of this software so that all of us can be confident that we are secure and safe! I want to thank the Developer for an outstanding 5 Star ⭐️ App. I truly appreciate your dedication and unique knowledge for creating this app! With that Mr. Developer I Tip my Hat 🎩 to you and say “Thanks “ for all of my friends who have taken the time to read this do yourself a favor and download this Unique Outstanding Design App! I don’t believe you will be disappointed! ( really ) !!!
Show more

Response from developer

Thank you for your kind words. The app is currently undergoing maintenance due to an issue with Apple message filter entitlements which is expected to be fixed in the coming days. Please send me an email and I’ll send you a free subscription code!

Developer apps

FAQ

What is Defndr?

Defndr is an SMS firewall that uses on-device machine learning to analyze and block spam, phishing attempts, and scams before they reach your inbox. It ensures your messages remain private by processing data locally on your iPhone.

Does Defndr have ads?

No, Defndr is ad-free. The free version of the app does not contain advertisements, and the developer emphasizes zero data collection.

What are the benefits of Defndr Pro?

Defndr Pro offers advanced ML models for detecting sophisticated scams, unlimited custom block lists, and allow lists for trusted contacts. It also provides smart pattern detection for suspicious formatting and adjustable sensitivity settings.

How does Defndr protect my privacy?

Defndr utilizes 100% on-device processing, meaning no cloud servers, analytics, or tracking pixels are used. Your SMS data stays exclusively on your device, ensuring zero data collection and maximum privacy.

What devices does Defndr support?

Defndr is currently supported on iPhone devices. It integrates with iOS Message Filtering to operate in the background.

How often is Defndr updated?

The latest version of Defndr is 2.5.4, last updated on February 18, 2026. Updates typically include improvements to AI models and feature enhancements.

What is the cost of Defndr?

Defndr offers a free core protection tier with basic spam detection and custom blocking. A premium subscription, Defndr Premium Yearly, is available for $14.99 per year and includes a 14-day free trial.

What is the age rating for Defndr?

Defndr has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.