# Spam Blocker - AI SMS Blocker — AI SMS Blocker for iOS

> Offline AI SMS filtering for iOS to block junk and promotional messages. (iPhone/iPad app by Blue Line co., Limited.)

- Source: https://appshunter.io/ios/app/spam-blocker-ai-sms-blocker/id1600267675 (this page in markdown: same URL + `.md`)
- Developer: [Blue Line co., Limited](https://appshunter.io/developer/1475362521)
- Category: Utilities, Lifestyle
- Price: Free
- Rating: 1.33/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 13 MB
- Languages: English, Chinese
- Released: 2022-02-20
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/spam-blocker-ai-sms-blocker/id1600267675/reviews.md

## What is Spam Blocker?

Spam Blocker - AI spam blocking, offline spam filtering

Spam Blocker is the most powerful SMS filtering app for iOS . It can classify incoming messages as normal, junk, transaction or promotion.

Spam Blocker uses Core ML machine learning model to filter spam messages offline at the device side, with accurate semantic recognition to block and filter spam messages.

# The power of users
"Spam Blocker uses statistical-based machine learning algorithms to learn from hundreds of thousands of SMS samples of all kinds. By identifying the semantic features of an SMS, it can accurately determine whether the received SMS is a normal SMS, a public service SMS or a spamming SMS, etc.
"The more support we get, the smarter SMS Defender will become.

# Privacy
We care so much about your privacy that "Spam Blocker" is a completely offline application. We rely on users to actively report spam messages to us to build and update our machine learning sample base.
If you voluntarily submit an SMS sample to "Spam Blocker", the desensitized SMS text and a number that you mark as spam or not will be collected and this data will be uploaded to our servers.

## Key features

- Offline AI spam filtering
- Classifies messages (normal, junk, transaction, promotion)
- Semantic recognition for accurate blocking
- User-powered machine learning updates
- Privacy-focused offline processing

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/spam-blocker-ai-sms-blocker/id1600267675/reviews.md

### 1/5 — 短信卫士拦截准确性

*2025-07-05*

输入关键字黑名单，完全拦截不了

## Frequently asked questions about Spam Blocker

### Does Spam Blocker have ads?

Spam Blocker is ad-free, allowing for an uninterrupted user experience. The app is completely offline and does not display advertisements.

### How does Spam Blocker learn to block spam?

Spam Blocker uses Core ML machine learning models that are trained on SMS samples. Users can voluntarily submit SMS samples to help build and update the machine learning sample base, making the app smarter over time.

### Is Spam Blocker available on Android?

Spam Blocker is currently available for iOS devices, including iPhone and iPod. There is no information available regarding an Android version at this time.

### What is the rating for Spam Blocker?

Spam Blocker has a rating of 1.3 stars based on 3 user ratings. This indicates a low user satisfaction score.

### How often is Spam Blocker updated?

Spam Blocker was last updated on February 20, 2022, with version 1.0. The initial release date was also February 20, 2022, suggesting infrequent updates since its launch.

### What age rating is Spam Blocker?

Spam Blocker has an age rating of 4+. This means it is suitable for users aged 4 and above.

### Does Spam Blocker require an internet connection?

Spam Blocker is designed to be a completely offline application. It uses on-device machine learning models for filtering, prioritizing user privacy and not requiring an internet connection for its core functionality.

### What types of messages can Spam Blocker classify?

Spam Blocker can classify incoming SMS messages into four categories: normal, junk, transaction, or promotion. This allows users to better manage their incoming communications.

## Version history (last 1 release)

### 1.0 — 2022-02-20

No release notes.

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## More apps by Blue Line co., Limited

- [Follower Analysis Pro](https://appshunter.io/ios/app/follower-analysis-pro/id1483613465)

All apps by Blue Line co., Limited: https://appshunter.io/developer/1475362521

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*