Comparison

Message Keyword Filter vs SMS Sift

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Message Keyword Filter

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
Read full description

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.

About

SMS Sift

Features
Read full description

"SMS Sift" is a safe, efficient and professional SMS filter that can help you filter spam messages from unknown phone numbers through custom filter rules. "SMS Sift" is based on the Core ML machine learning framework to filter spam SMS offline on the device side, which can accurately identify spam SMS through semantics, so that you are protected from the harassment of blocked SMS "SMS Sift" is a tool for sending SMS quickly, SMS templates for New Year holidays, workplace business and other scenarios, so that you will never worry about the content of SMS. Just pick up your phone to find the template to copy and paste, one-click group sending, simple operation, efficient and convenient!Built-in massive SMS, you can choose **Characteristic** • Add an unlimited number of custom filter rules • No need for network permission, safe and reliable filtering of spam SMS, privacy is not leaked • "Blacklist" and "Whitelist" dual list filtering mode, filter spam SMS while ensuring that important SMS messages are not mistakenly filtered • Built-in inspector lets you test and validate filtering rules • Easily set up defined filter rules ** Gather everyone's efforts to make the identification of the APP more accurate ** "SMS Sift" uses statistical-based machine learning algorithms to learn from hundreds of thousands of various SMS samples. Without the user configuring any keywords, it can accurately determine whether the received SMS is a normal SMS, a public welfare SMS or an advertising harassment SMS by identifying the semantic characteristics of an SMS. If the APP has a judgment error, you can report SMS samples in the App to help the APP further improve the accuracy, the more submissions, the higher the accuracy. ** Privacy Policy: What information does SMS Blocker collect? ** SMS Sift runs in a closed and secure environment provided by iOS, is a completely offline app, doesn't even ask for network permission (until you first report spam to us), reads, collects, or tags your text messages. We rely on a wide range of users to proactively report spam messages to us to build a sample library of machine learning. "SMS Sift" will not collect any of your information, let alone upload your SMS content, if you are careful enough, you will find that Panda will not ask for network permission, completely offline operation. If you voluntarily submit a sample text message to us, the text of the redacted SMS and a number that you mark as spam or not will be collected, only these two data.

Screenshots

Message Keyword Filter4 screens
SMS Sift4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Message Keyword Filter versus SMS Sift: the parameters behind the verdict, then further details
ParameterMessage Keyword FilterSMS Sift
Price$0.99$0.99
Rating5.0 (1 ratings) — better—
Positive reviews28.6% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.012.1 — better
Further details — not scored
Size15 MB2 MB
Age rating4+4+
DeveloperPlaneta Pigra Co., Ltd.新俊 方

In-app purchases

None

Message Keyword Filter

No in-app purchases

None

SMS Sift

No in-app purchases

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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