Report updated Apr 23, 2026

Overview · Full Intel report in progress

Defndr: SMS Spam Blocker is an established utilities app that is free with in-app purchases. With a 3.0/5 rating from 2 reviews, it shows polarized user reception.

What is Defndr: SMS Spam Blocker?

Defndr is an iOS SMS firewall that utilizes on-device machine learning to filter spam, phishing attempts, and scams. It distinguishes itself through a zero-trust privacy model that ensures all message processing occurs locally without cloud connectivity or data tracking.

Current Momentum

v2.5 · 1w ago

Intense

Last updated 9d ago. 5 versions tracked.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Utilities

No ranking data

Rating Pulse 🇺🇸

What makes this app unique?

What Are The Key Features?

On-Device ML ProcessingStandard

Analyzes SMS patterns and blocks threats locally without sending user data to cloud servers.

iOS Message Filtering IntegrationStandard

Operates silently in the background to automatically categorize incoming messages.

Custom Keyword BlockingStandard

Allows users to define specific terms to filter out unwanted messages.

Defndr Pro Advanced ModelsStandard

Provides enhanced scam detection, unlimited block lists, and adjustable sensitivity settings.

How much does it cost?

Freemium

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

View the full user-sentiment analysis

Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.

Go deeper

Analysis in progress, available soon

What is the competitive landscape for Defndr: SMS Spam Blocker?

How's The Utilities Market?

Market outlook for this category

Available very soon

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for Defndr: SMS Spam Blocker

Key Takeaways

The app prioritizes user privacy by performing all spam detection and pattern analysis entirely on-device.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Defndr: SMS Spam Blocker, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Defndr: SMS Spam Blocker Intelligence Report.” Updated Apr 23, 2026. https://marlvel.ai/apps/defndr-sms-spam-blocker

Agent Markdown (.md)See methodologyContact support

Data licensed under CC-BY-NC 4.0