# Message Keyword Filter vs 奇安信天守

The clearest difference is price: 奇安信天守 at Free against Message Keyword Filter's $0.99. 奇安信天守 also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 2 months). On ads and device support there is nothing between them.

奇安信天守 is free to download; Message Keyword Filter costs $0.99 up front. Message Keyword Filter sells 1 one-off in-app purchase. 奇安信天守 asks for nothing beyond the download.

Message Keyword Filter ships an update every 2 months, 奇安信天守 every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Message Keyword Filter | 奇安信天守 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/message-keyword-filter/id1672730162/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 15 MB | 37 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Planeta Pigra Co., Ltd.](https://appshunter.io/developer/1738642017) | [legendsec](https://appshunter.io/developer/715319718) |

## What reviewers say

### Message Keyword Filter

[App page](https://appshunter.io/ios/app/message-keyword-filter/id1672730162)

This utility helps manage SMS messages by filtering content based on keywords and senders. It utilizes iOS system extensions for secure, private message classification without data leakage.

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

**In-app purchases (1)**

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


### 奇安信天守

[App page](https://appshunter.io/ios/app/id6779464240)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Message Keyword Filter free?

Message Keyword Filter costs $0.99, and also offers in-app purchases.

### Is 奇安信天守 free?

奇安信天守 is free to download, with no in-app purchases.

### Do Message Keyword Filter or 奇安信天守 have ads?

Neither Message Keyword Filter nor 奇安信天守 shows ads.

### Which is updated more often, Message Keyword Filter or 奇安信天守?

Message Keyword Filter ships an update every 2 months, and 奇安信天守 every 3 weeks. Most recently, Message Keyword Filter was updated on October 25, 2026 and 奇安信天守 on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*