# CnR M.A.R.S. vs MAXQR

The clearest difference is ads: CnR M.A.R.S. at none against MAXQR's shown. CnR M.A.R.S. also leads on iOS requirement (11.0 vs 15.6). MAXQR's advantage is update cadence (every 2 weeks vs every 38 months). On price, 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, MAXQR every 2 weeks. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | CnR M.A.R.S. | MAXQR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 38 months | **Every 2 weeks** |
| Size | 17 MB | 64 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Allerup.Com AS](https://appshunter.io/developer/1465876722) | [All About Housing LLC](https://appshunter.io/developer/1773925650) |

## What reviewers say

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

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

**In-app purchases:** none


### MAXQR

[App page](https://appshunter.io/ios/app/maxqr-scan-and-create/id6753972794)

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

**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 MAXQR free?

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

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

MAXQR shows ads; CnR M.A.R.S. does not.

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

CnR M.A.R.S. ships an update every 38 months, and MAXQR every 2 weeks. Most recently, CnR M.A.R.S. was updated on November 2, 2026 and MAXQR on October 29, 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.*