# Millimeters to Centimeters vs QR Coder

The clearest difference is price: QR Coder at Free against Millimeters to Centimeters's $0.99. Millimeters to Centimeters's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 18.0). On update cadence, ads and device support there is nothing between them.

QR Coder is free to download; Millimeters to Centimeters costs $0.99 up front. QR Coder sells 1 one-off in-app purchase. Millimeters to Centimeters asks for nothing beyond the download.

Millimeters to Centimeters ships an update every 9 months, QR Coder every 12 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Millimeters to Centimeters | QR Coder |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 12 months |
| Size | 7 MB | 5 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Pelster](https://appshunter.io/developer/429002805) | [Claudio Guirunas](https://appshunter.io/developer/1149103410) |

## What reviewers say

### Millimeters to Centimeters

[App page](https://appshunter.io/ios/app/millimeters-to-centimeters/id1065076235)

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

**In-app purchases:** none


### QR Coder

[App page](https://appshunter.io/ios/app/qr-coder/id6748948979)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $0.29 | one-time |


## Frequently asked questions

### Is Millimeters to Centimeters free?

Millimeters to Centimeters costs $0.99, with no in-app purchases.

### Is QR Coder free?

QR Coder is free to download, with in-app purchases available.

### Do Millimeters to Centimeters or QR Coder have ads?

Neither Millimeters to Centimeters nor QR Coder shows ads.

### Which is updated more often, Millimeters to Centimeters or QR Coder?

Millimeters to Centimeters ships an update every 9 months, and QR Coder every 12 months. Most recently, Millimeters to Centimeters was updated on October 9, 2026 and QR Coder on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*