# SMS Shield vs Robot Spam Text Blocker

The clearest difference is rating: Robot Spam Text Blocker at 3.9 against SMS Shield's 3.2. Robot Spam Text Blocker also leads on monetization model (free with in-app purchases vs subscription) and review sentiment (50% vs 18%). SMS Shield's advantage is update cadence (fortnightly vs every 5 weeks) and iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. SMS Shield sells 3 in-app purchases, starting at $0.99 per month and Robot Spam Text Blocker sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Robot Spam Text Blocker holds the better App Store score, 3.9 against 3.2. Both are backed by a comparable volume of ratings — 138 and 53 respectively. Written reviews point the same way: 18% of SMS Shield's written reviews are positive against 50% of Robot Spam Text Blocker's.

SMS Shield ships an update fortnightly, Robot Spam Text Blocker every 5 weeks. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SMS Shield | Robot Spam Text Blocker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (138 ratings)](https://appshunter.io/ios/app/sms-shield/id1248198400/reviews) | **[3.9 (53 ratings)](https://appshunter.io/ios/app/robot-spam-text-blocker/id1634332260/reviews)** |
| Number of ratings | **138** | 53 |
| Positive reviews | 17.9% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 15 MB | 17 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Taphive GmbH](https://appshunter.io/developer/466416247) | [Murphy Brantley](https://appshunter.io/developer/428462902) |

## What reviewers say

### SMS Shield

[App page](https://appshunter.io/ios/app/sms-shield/id1248198400)

This app uses machine learning to automatically filter unwanted SMS messages, including promotions, phishing attempts, and scam texts. It offers features like a frequent traveler mode to block international carrier messages and a custom block list for specific numbers or keywords. All filtering is done offline, ensuring 100% privacy.

**Highlights:** Automatic spam filtering, Frequent traveler mode, Custom block list, Offline filtering, Multi-lingual spam detection

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Classic | $0.99 | per month |
| Silver | $3.99 | per 6 months |
| Gold | $8.49 | per year |

**What reviewers like**

- 👍 Works well for some users
- 👍 Filters spam effectively for some
- 👍 Good for blocking specific keywords for some
- 👍 Worth the price for some users
- 👍 Privacy-focused (messages stay on device)

**What reviewers complain about**

- 🐛 Doesn't work for many users
- 🐛 Fails to filter obvious scams
- 🐛 Still receives spam texts
- 🐛 Sends legitimate texts to junk
- 🐛 Requires manual spam addition

**Reported bugs**

- Filters out legitimate texts
- Doesn't block known spam
- Requires manual input for blocking
- No response from support
- Doesn't block SMS from email

**Requested features**

- More blocking of SMS scams
- Option to mark SMS as spam or not spam
- Ability to whitelist keywords
- Better machine learning/training
- Improved support responsiveness


### 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 Shield free?

SMS Shield is free to download, with in-app purchases available.

### Is Robot Spam Text Blocker free?

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

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

Robot Spam Text Blocker is rated higher. SMS Shield averages 3.2 out of 5 from 138 ratings, while Robot Spam Text Blocker averages 3.9 from 53 ratings.

### Do SMS Shield or Robot Spam Text Blocker have ads?

Neither SMS Shield nor Robot Spam Text Blocker shows ads.

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

SMS Shield ships an update fortnightly, and Robot Spam Text Blocker every 5 weeks. Most recently, SMS Shield was updated on October 22, 2026 and Robot Spam Text Blocker on October 24, 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.*