# CnR M.A.R.S. vs S1 Security

The clearest difference is update cadence: S1 Security at every 6 months against CnR M.A.R.S.'s every 38 months. CnR M.A.R.S.'s advantage is iOS requirement (11.0 vs 14.3). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CnR M.A.R.S. ships an update every 38 months, S1 Security every 6 months. The most recent releases landed on September 9, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | CnR M.A.R.S. | S1 Security |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/s1-security/id6468951188/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 6 months** |
| Monetization | — | Free |
| Size | 17 MB | 34 MB |
| Requires iOS | **11.0** | 14.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Allerup.Com AS](https://appshunter.io/developer/1465876722) | [Sercomm USA Inc.](https://appshunter.io/developer/1711024397) |

## What reviewers say

### CnR M.A.R.S.

[App page](https://appshunter.io/ios/app/cnr-mars/id1243473878)

**In-app purchases:** none


### S1 Security

[App page](https://appshunter.io/ios/app/s1-security/id6468951188)

Monitor your IP cameras remotely, add new devices to your watchlist, and share live feeds with family and friends. Review recorded video clips easily through a timeline interface and manage camera configurations and status.

**Highlights:** Add and manage IP cameras, Share camera access, Two-way audio support, Automatic video recording, Timeline video clip access, Camera configuration management, Camera status monitoring

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CnR M.A.R.S. free?

CnR M.A.R.S. is free to download, with no in-app purchases.

### Is S1 Security free?

S1 Security is free to download, with no in-app purchases.

### Do CnR M.A.R.S. or S1 Security have ads?

Neither CnR M.A.R.S. nor S1 Security shows ads.

### Which is updated more often, CnR M.A.R.S. or S1 Security?

CnR M.A.R.S. ships an update every 38 months, and S1 Security every 6 months. Most recently, CnR M.A.R.S. was updated on September 9, 2026 and S1 Security on September 11, 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.*