# QR Code Master：Barcode Scanner vs Quatuordecuple Calc

The clearest difference is in-app purchases: Quatuordecuple Calc at none against QR Code Master：Barcode Scanner's 3. QR Code Master：Barcode Scanner's advantage is iOS requirement (13.0 vs 15.8.3). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. QR Code Master：Barcode Scanner sells 3 in-app purchases, starting at $4.99 per 7 days. Quatuordecuple Calc asks for nothing beyond the download.

QR Code Master：Barcode Scanner ships an update every 9 days, Quatuordecuple Calc every 2 weeks. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | QR Code Master：Barcode Scanner | Quatuordecuple Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (51 ratings)](https://appshunter.io/ios/app/qr-code-masterbarcode-scanner/id6467838857/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 36 MB |
| Requires iOS | **13.0** | 15.8.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [SPARK TECH LIMITED](https://appshunter.io/developer/1709259681) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### QR Code Master：Barcode Scanner

[App page](https://appshunter.io/ios/app/qr-code-masterbarcode-scanner/id6467838857)

Instantly scan and generate custom QR codes with AI object recognition. Manage your scan history, share codes easily, and personalize designs with colors and titles. Offers a premium subscription for an ad-free experience and advanced features.

**Highlights:** QR and barcode scanning, AI object recognition, Custom QR code creation, History management, Easy sharing and export, Ad-free premium option

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Scanner.Pro.Week | $4.99 | per 7 days |
| Scanner.Pro.Month | $19.99 | per month |
| Scanner.Pro.Year | $29.99 | per year |


### Quatuordecuple Calc

[App page](https://appshunter.io/ios/app/quatuordecuple-calc/id6742386184)

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

**In-app purchases:** none


## Frequently asked questions

### Is QR Code Master：Barcode Scanner free?

QR Code Master：Barcode Scanner is free to download, with in-app purchases available.

### Is Quatuordecuple Calc free?

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

### Do QR Code Master：Barcode Scanner or Quatuordecuple Calc have ads?

Both QR Code Master：Barcode Scanner and Quatuordecuple Calc show ads.

### Which is updated more often, QR Code Master：Barcode Scanner or Quatuordecuple Calc?

QR Code Master：Barcode Scanner ships an update every 9 days, and Quatuordecuple Calc every 2 weeks. Most recently, QR Code Master：Barcode Scanner was updated on October 12, 2026 and Quatuordecuple Calc on October 10, 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.*