# Message Keyword Filter — Filter SMS from unknown sender

> Classify and filter SMS messages using custom keywords and sender lists. (iPhone/iPad app by Planeta Pigra Co., Ltd..)

- Source: https://appshunter.io/ios/app/message-keyword-filter/id1672730162 (this page in markdown: same URL + `.md`)
- Developer: [Planeta Pigra Co., Ltd.](https://appshunter.io/developer/1738642017)
- Category: Utilities
- Price: $0.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 15 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2023-02-21
- Data updated: 2026-08-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/message-keyword-filter/id1672730162/reviews.md

## What is Message Keyword Filter?

Are you looking for a simple and secure tool for classifying and filtering SMS messages?

You can add keywords and senders according to your needs, and SMS messages containing specified keywords will be automatically classified and filtered based on your settings.
The app uses iOS system extensions to securely identify the content of SMS messages and protect your privacy, with no risk of any data leakage.

The app is easy to use, secure, and protects your personal privacy while helping you manage your SMS messages with ease.

## Key features

- Keyword-based SMS filtering
- Sender-specific filtering
- Automatic message classification
- Secure iOS system extensions
- Privacy protection
- Easy-to-use interface

## Pricing and in-app purchases

Base price: $0.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Support developer | $2.99 | one-time |


## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/message-keyword-filter/id1672730162/reviews.md

### 1/5 — 这回对了

*2026-08-04*

评论是不能删的吗

### 5/5 — 메세지 구조

*2025-12-14*

감사합니다

### 2/5 — Did not work for me

*2025-05-02*

Not sure if I set this up properly but my goal was to filter certain messages from an known sender. I put the keywords in one of the categories but it hasn’t filtered anything.

**Developer response:** Thanks for your feedback! 
Due to iOS system limitations, filtering only works for unknown numbers. If the sender is saved as a contact or you've replied multiple times, iOS will completely bypass third-party apps like ours, so filtering will not work in those cases.

### 5/5 — 메세지 필터 1황

*2025-04-14*

진짜 전설이다

### 3/5 — 不是很好用？

*2025-02-06*

关键词加多了后很卡，能不能增加组合关键词功能。有些明明设定有关键词在信息里面就是不分类，在软件中测试又是正常的！分类时很慢收到短信后要等一会时间才分类！

### 1/5 — The app doesn’t work

*2024-08-14*

The app doesn’t allow you to block spam only add keywords to put things in the finance category - very annoying broken app!!!

### 5/5 — 打不了评论？

*2024-05-23*

这个怎么用，还不清楚

### 3/5 — 필터링이 전혀 안됨

*2024-01-28*

잘 되고 있었는데 업뎃을 한건지 뭔지 바뀐 이후로는 새로 입력하는 필터리스트가 하나도 반영이 안됨

**Developer response:** 안녕하세요
키워드 입력하신다음 엔터키를 누르셔야 저장됩니다. 저장 방식이 개선할 예정이고요. 
만약에 엔터키를 누르셔도 계속 사라지면 어플내 피드백 기능을 통해서 연락 부탁드립니다!

### 2/5 — 无法过滤和编辑

*2023-12-12*

无法过滤已有的短信，添加过滤词后左划也不能删除或编辑。不好用

**Developer response:** 你好，
已有短信目前没有什么办法，另外关键词删除的功能已经修复了，还增加了正则的功能，可以更新到最新的1.2版本尝试一下。

### 3/5 — 无法过滤

*2023-03-18*

无法过滤阿。输入了关键词 退订，还是能收到包含退订两个字的短信

**Developer response:** 你好，请确认下 手机系统设置-信息中 信息过滤是否开启。开启后务必设置短信过滤为过滤器！
如果问题没有被解决，可以通过app内的反馈联系我。

## Frequently asked questions about Message Keyword Filter

### Does Message Keyword Filter have ads?

No, Message Keyword Filter does not contain advertisements. It is a free application.

### How does Message Keyword Filter protect my privacy?

Message Keyword Filter uses iOS system extensions to process SMS content directly on your device, ensuring no data is leaked or sent to external servers.

### What devices does Message Keyword Filter support?

Message Keyword Filter is designed for iPhone devices.

### How often is Message Keyword Filter updated?

The app was last updated on May 21, 2025, with version 1.32. Updates are released to improve functionality and reliability.

### What is the age rating for Message Keyword Filter?

Message Keyword Filter has an age rating of 4+, making it suitable for a wide range of users.

### Can I filter messages from specific senders with Message Keyword Filter?

Yes, Message Keyword Filter allows you to add specific senders to your filter list, ensuring messages from them are handled according to your settings.

### How does Message Keyword Filter classify messages?

The app automatically classifies SMS messages based on keywords you define in your settings. Messages containing these keywords will be filtered.

## Version history (last 5 releases)

### 1.43 — 2026-07-11

What's New:
- Much faster and more reliable filtering, even with large rule sets
- Rebuilt CSV import/export: automatic format and encoding detection, duplicate-free import, and a result summary when finished
- A confirmation prompt before enabling Whitelist Mode, so verification codes don't get blocked by accident
- The Test Message page now accurately reflects Whitelist Mode behavior
- UI refinements: colorful category icons, empty-state guidance, and a quick link to rate the app

### 1.42 — 2026-05-18

Fixed iCloud-related issues.

### 1.41 — 2026-05-18

Fixed a minor issue that caused the latest version's content to not display properly.

### 1.40 — 2026-05-13

Refreshed the main and More layouts so categories, rule counts, and common tools are easier to scan.
Improved the local message test flow so rules can be checked before you rely on them.

### 1.32 — 2025-05-21

-Add Whitelist Feature

## Apps similar to Message Keyword Filter

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [MessageCat](https://appshunter.io/ios/app/messagecat/id6503609135) | 4.3 (30) | Free | Utilities |
| [SMS Hunter: Scam&Spam Blocker](https://appshunter.io/ios/app/sms-hunter-scam-and-spam-blocker/id6450999012) | 4.0 (4) | $0.99 | Utilities |
| [Quiet - SMS Classifier](https://appshunter.io/ios/app/quiet-sms-classifier/id6739860634) | 1.0 (1) | $3.99 | Utilities |
| [信通卫士](https://appshunter.io/ios/app/id6467718270) | 5.0 (1) | Free | Utilities |
| [MySecretMessage](https://appshunter.io/ios/app/mysecretmessage/id6445821645) | 3.0 (1) | Free | Utilities |

## More apps by Planeta Pigra Co., Ltd.

- [Label Ledger - Expense Manager](https://appshunter.io/ios/app/label-ledger-expense-manager/id1624646468)
- [Reminder Book - Anniv Birthday](https://appshunter.io/ios/app/reminder-book-anniv-birthday/id1644877792)
- [Makeup Mirror - LazyPlanet](https://appshunter.io/ios/app/makeup-mirror-lazyplanet/id6770541170)

All apps by Planeta Pigra Co., Ltd.: https://appshunter.io/developer/1738642017

## Related topics

[text message filter](https://appshunter.io/ios/topics/text-message-filter) · [message filter](https://appshunter.io/ios/topics/message-filter)

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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 2026-08-29.*