# Precision Unit Converter vs QR & Barcode Scan

The clearest difference is price: QR & Barcode Scan at Free against Precision Unit Converter's $7.99. QR & Barcode Scan also leads on update cadence (every 3 months vs every 8 months). Precision Unit Converter's advantage is in-app purchases (none vs 2) and ads (none vs shown).

QR & Barcode Scan is free to download; Precision Unit Converter costs $7.99 up front. QR & Barcode Scan sells 2 in-app purchases, starting at $9.99 per 7 days. Precision Unit Converter asks for nothing beyond the download.

Precision Unit Converter ships an update every 8 months, QR & Barcode Scan every 3 months. The most recent releases landed on November 4, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Precision Unit Converter | QR & Barcode Scan |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | — | **[4.8 (58 ratings)](https://appshunter.io/ios/app/qr-and-barcode-scan/id6762162278/reviews)** |
| Number of ratings | — | **58** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 60 MB | 18 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SimTeCon GmbH](https://appshunter.io/developer/1761797043) | [Majin FX](https://appshunter.io/developer/1742218504) |

## What reviewers say

### Precision Unit Converter

[App page](https://appshunter.io/ios/app/precision-unit-converter/id6618147279)

**In-app purchases:** none


### QR & Barcode Scan

[App page](https://appshunter.io/ios/app/qr-and-barcode-scan/id6762162278)

Instantly scan and generate QR codes and barcodes with advanced technology. This app automatically detects and decodes information, supports various formats, and allows you to create custom codes for sharing. It also offers features like scanning from your photo library and an organized history log.

**Highlights:** Lightning-fast automatic scanning, Universal barcode format support, Custom QR code generation, Scan from photo library, Flashlight and auto-zoom, Comprehensive scan history, Action-oriented scan results

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Month pro | $19.99 | per month |


## Frequently asked questions

### Is Precision Unit Converter free?

Precision Unit Converter costs $7.99, with no in-app purchases.

### Is QR & Barcode Scan free?

QR & Barcode Scan is free to download, with in-app purchases available.

### Do Precision Unit Converter or QR & Barcode Scan have ads?

QR & Barcode Scan shows ads; Precision Unit Converter does not.

### Which is updated more often, Precision Unit Converter or QR & Barcode Scan?

Precision Unit Converter ships an update every 8 months, and QR & Barcode Scan every 3 months. Most recently, Precision Unit Converter was updated on November 4, 2026 and QR & Barcode Scan on November 9, 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.*