# Duo Cleaner vs QR Code Reader；Barcode Scanner

The clearest difference is rating: QR Code Reader；Barcode Scanner at 5.0 against Duo Cleaner's 4.4. QR Code Reader；Barcode Scanner also leads on ads (none vs shown) and iOS requirement (15.0 vs 17.0). Duo Cleaner's advantage is monetization model (free vs freemium) and ratings volume (28 vs 2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Duo Cleaner sells 6 in-app purchases, starting at $1.99 per 7 days and QR Code Reader；Barcode Scanner sells 3 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

QR Code Reader；Barcode Scanner holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Duo Cleaner has 28 ratings behind it against 2, so its average is the more settled of the two.

Duo Cleaner ships an update weekly, QR Code Reader；Barcode Scanner every 2 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Duo Cleaner | QR Code Reader；Barcode Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (28 ratings)](https://appshunter.io/ios/app/duo-cleaner-clean-up-storage/id6771264098/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/qr-code-readerbarcode-scanner/id6786129251/reviews)** |
| Number of ratings | **28** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | **Free** | Freemium |
| Size | 56 MB | 17 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TP Technology Service Company Limited](https://appshunter.io/developer/1683283412) | [Hong Kong Haoyun Technology Co., Limited](https://appshunter.io/developer/1855893955) |

## What reviewers say

### Duo Cleaner

[App page](https://appshunter.io/ios/app/duo-cleaner-clean-up-storage/id6771264098)

This AI-powered app helps you quickly find and remove duplicate and similar photos, screenshots, and other clutter from your iPhone's photo library. It operates entirely on-device, ensuring your privacy and working offline to free up valuable storage space.

**Highlights:** AI-powered duplicate photo detection, Similar photo grouping and comparison, Screenshot detection and removal, On-device processing for privacy, Offline functionality, Storage saving dashboard

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Weekly | $3.99 | per 7 days |
| Weekly | $6.99 | per 7 days |
| Annual | $19.99 | per year |
| Annual | $29.99 | per year |
| Annual | $34.99 | per year |


### QR Code Reader；Barcode Scanner

[App page](https://appshunter.io/ios/app/qr-code-readerbarcode-scanner/id6786129251)

Instantly scan QR codes and barcodes to access websites, product info, WiFi, and more. Save and create custom QR codes with a user-friendly interface. Unlock premium features like secure URL verification and document scanning with OCR.

**Highlights:** Instant QR and barcode scanning, Scan from photos, Scan history, Create custom QR codes, Secure URL verification, HD document scanner with OCR, Export to PDF & DOCX

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $9.99 | per 7 days |
| Monthly Subscription | $24.99 | per month |
| Annual Subscription | $49.99 | per year |


## Frequently asked questions

### Is Duo Cleaner free?

Duo Cleaner is free to download, with in-app purchases available.

### Is QR Code Reader；Barcode Scanner free?

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

### Which has better reviews, Duo Cleaner or QR Code Reader；Barcode Scanner?

QR Code Reader；Barcode Scanner is rated higher. Duo Cleaner averages 4.4 out of 5 from 28 ratings, while QR Code Reader；Barcode Scanner averages 5.0 from 2 ratings.

### Do Duo Cleaner or QR Code Reader；Barcode Scanner have ads?

Duo Cleaner shows ads; QR Code Reader；Barcode Scanner does not.

### Which is updated more often, Duo Cleaner or QR Code Reader；Barcode Scanner?

Duo Cleaner ships an update weekly, and QR Code Reader；Barcode Scanner every 2 weeks. Most recently, Duo Cleaner was updated on October 25, 2026 and QR Code Reader；Barcode Scanner on October 25, 2026.

---

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