# COB vs SMS Spam Armor

The clearest difference is in-app purchases: COB at none against SMS Spam Armor's 1. COB also leads on device support (3 vs 1) and iOS requirement (15.5 vs 17.6). SMS Spam Armor's advantage is update cadence (every 11 days vs every 6 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. SMS Spam Armor sells 1 in-app purchase, starting at $4.99 per year. COB asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for COB against 5.0 for SMS Spam Armor. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

COB ships an update every 6 weeks, SMS Spam Armor every 11 days. The most recent releases landed on September 8, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | COB | SMS Spam Armor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/cob-eoffice/id1578068882/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/sms-spam-armor/id6754305226/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 45 MB | 6 MB |
| Requires iOS | **15.5** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Co-opBank](https://appshunter.io/developer/1578068884) | [Nitron Digital LLC](https://appshunter.io/developer/1844694436) |

## What reviewers say

### COB

[App page](https://appshunter.io/ios/app/cob-eoffice/id1578068882)

This electronic office solution streamlines business operations with digital document management and workflow automation. It aims to enhance efficiency and accessibility for corporate users.

**Highlights:** Electronic office solution, Digital document management, Workflow automation, Business operations enhancement, Increased efficiency

**Features:** macOS Compatibility

**In-app purchases:** none


### SMS Spam Armor

[App page](https://appshunter.io/ios/app/sms-spam-armor/id6754305226)

This app offers robust protection against text message scams and phishing attempts by filtering unwanted messages directly on your device. It provides customizable blocking rules and multi-layered protection without collecting or processing your personal data.

**Highlights:** On-device message processing, Customizable blocking rules, Phone number blocking, Keyword and pattern recognition, Real-time filtering, Transparent operation logs

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SMS Spam Armor Pro Annual | $4.99 | per year |


## Frequently asked questions

### Is COB free?

COB is free to download, with no in-app purchases.

### Is SMS Spam Armor free?

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

### Which has better reviews, COB or SMS Spam Armor?

COB and SMS Spam Armor are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do COB or SMS Spam Armor have ads?

Neither COB nor SMS Spam Armor shows ads.

### Which is updated more often, COB or SMS Spam Armor?

COB ships an update every 6 weeks, and SMS Spam Armor every 11 days. Most recently, COB was updated on September 8, 2026 and SMS Spam Armor on June 2, 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.*