# Spam Text Blocker vs Smart Adding Machine

The clearest difference is price: Spam Text Blocker at Free against Smart Adding Machine's $3.99. Smart Adding Machine's advantage is in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

Spam Text Blocker is free to download; Smart Adding Machine costs $3.99 up front. Spam Text Blocker sells 2 in-app purchases, starting at $3.99 per month. Smart Adding Machine asks for nothing beyond the download.

Spam Text Blocker ships an update every 6 weeks, Smart Adding Machine every 3 weeks. The most recent releases landed on October 11, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Spam Text Blocker | Smart Adding Machine |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.4 (137 ratings)](https://appshunter.io/ios/app/spam-text-blocker-textshield/id6448859008/reviews)** | — |
| Number of ratings | **137** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 0 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [FathomTel, Inc.](https://appshunter.io/developer/1482732721) | [Harry Detrick](https://appshunter.io/developer/1698895959) |

## What reviewers say

### Spam Text Blocker

[App page](https://appshunter.io/ios/app/spam-text-blocker-textshield/id6448859008)

This app filters out unwanted spam and scam texts, keeping your inbox clean and organized. It intelligently sorts messages into categories, ensuring you only see important communications. Advanced AI detects and blocks deceptive texts, protecting you from financial loss.

**Highlights:** Spam text blocking, Scam detection, Inbox organization, Transaction/Promotion sorting, AI-powered filtering, Privacy-focused

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TextShield Pro - Monthly | $3.99 | per month |
| TextShield Pro - Annual | $29.99 | per year |


### Smart Adding Machine

[App page](https://appshunter.io/ios/app/smart-adding-machine/id6452400755)

**In-app purchases:** none


## Frequently asked questions

### Is Spam Text Blocker free?

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

### Is Smart Adding Machine free?

Smart Adding Machine costs $3.99, with no in-app purchases.

### Do Spam Text Blocker or Smart Adding Machine have ads?

Neither Spam Text Blocker nor Smart Adding Machine shows ads.

### Which is updated more often, Spam Text Blocker or Smart Adding Machine?

Spam Text Blocker ships an update every 6 weeks, and Smart Adding Machine every 3 weeks. Most recently, Spam Text Blocker was updated on October 11, 2026 and Smart Adding Machine on September 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.*