# Message Keyword Filter vs SMS Sift

The clearest difference is device support: SMS Sift at 3 against Message Keyword Filter's 1. SMS Sift also leads on iOS requirement (12.1 vs 26.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Message Keyword Filter costs $0.99 and SMS Sift $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Message Keyword Filter ships an update every 2 months, SMS Sift every 3 months. The most recent releases landed on November 7, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Message Keyword Filter | SMS Sift |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| 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 | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | — |
| Size | 15 MB | 2 MB |
| Requires iOS | 26.0 | **12.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Planeta Pigra Co., Ltd.](https://appshunter.io/developer/1738642017) | [新俊 方](https://appshunter.io/developer/1129702280) |

## 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:** none


### SMS Sift

[App page](https://appshunter.io/ios/app/sms-sift-escort-messages/id6449909683)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Message Keyword Filter free?

Message Keyword Filter costs $0.99, with no in-app purchases.

### Is SMS Sift free?

SMS Sift costs $0.99, with no in-app purchases.

### Do Message Keyword Filter or SMS Sift have ads?

Neither Message Keyword Filter nor SMS Sift shows ads.

### Which is updated more often, Message Keyword Filter or SMS Sift?

Message Keyword Filter ships an update every 2 months, and SMS Sift every 3 months. Most recently, Message Keyword Filter was updated on November 7, 2026 and SMS Sift on October 27, 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.*