# SMS SPAM Filter vs Robot Spam Text Blocker

The clearest difference is in-app purchases: SMS SPAM Filter at none against Robot Spam Text Blocker's 4. SMS SPAM Filter also leads on update cadence (weekly vs every 5 weeks) and iOS requirement (11.0 vs 15.0). Robot Spam Text Blocker's advantage is review sentiment (50% vs 33%) and ratings volume (54 vs 8). On price, rating, ads and device support there is nothing between them.

Both are free to download. Robot Spam Text Blocker sells 4 in-app purchases, starting at $3.99 per month. SMS SPAM Filter asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.8 for SMS SPAM Filter against 3.9 for Robot Spam Text Blocker. That said, the two scores are not equally well evidenced: Robot Spam Text Blocker has 54 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 33% of SMS SPAM Filter's written reviews are positive against 50% of Robot Spam Text Blocker's.

SMS SPAM Filter ships an update weekly, Robot Spam Text Blocker every 5 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SMS SPAM Filter | Robot Spam Text Blocker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (8 ratings)](https://appshunter.io/ios/app/sms-spam-filter/id1448980270/reviews) | **[3.9 (54 ratings)](https://appshunter.io/ios/app/robot-spam-text-blocker/id1634332260/reviews)** |
| Number of ratings | 8 | **54** |
| Positive reviews | 33.3% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 17 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michal Indra](https://appshunter.io/developer/1256483572) | [Murphy Brantley](https://appshunter.io/developer/428462902) |

## What reviewers say

### SMS SPAM Filter

[App page](https://appshunter.io/ios/app/sms-spam-filter/id1448980270)

Block unwanted SMS messages with customizable rules and AI-powered evaluation. Protect your privacy by filtering messages based on sender, content, or country code, all processed offline on your device.

**Highlights:** Customizable blocking rules, Block by expression, Block by phone number, Block by country code, Block by area code, AI-powered message evaluation, Offline processing

**In-app purchases:** none


### Robot Spam Text Blocker

[App page](https://appshunter.io/ios/app/robot-spam-text-blocker/id1634332260)

This app provides immediate relief from unwanted spam, telemarketing, and robot texts. It automatically blocks messages from an extensive, growing list of numbers and allows users to manually block or allow specific numbers and keywords. A free trial is available before a subscription is required for full service.

**Highlights:** Automatic spam blocking, Manual number blocking/allowing, Keyword blocking, Weekly spam list updates, Dedicated customer support, Free trial period

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Text Blocking | $3.99 | per month |
| Unlimited Text Blocking | $29.99 | per year |
| Unlimited Text Blocking | $29.99 | per year |
| Unlimited Text Blocking | $29.99 | per year |


## Frequently asked questions

### Is SMS SPAM Filter free?

SMS SPAM Filter is free to download, with no in-app purchases.

### Is Robot Spam Text Blocker free?

Robot Spam Text Blocker is free to download, with in-app purchases available.

### Which has better reviews, SMS SPAM Filter or Robot Spam Text Blocker?

Robot Spam Text Blocker is rated higher. SMS SPAM Filter averages 3.8 out of 5 from 8 ratings, while Robot Spam Text Blocker averages 3.9 from 54 ratings.

### Do SMS SPAM Filter or Robot Spam Text Blocker have ads?

Neither SMS SPAM Filter nor Robot Spam Text Blocker shows ads.

### Which is updated more often, SMS SPAM Filter or Robot Spam Text Blocker?

SMS SPAM Filter ships an update weekly, and Robot Spam Text Blocker every 5 weeks. Most recently, SMS SPAM Filter was updated on November 2, 2026 and Robot Spam Text Blocker on November 3, 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.*