# DD Lock vs QR Code Barcode Ai Reader

The clearest difference is in-app purchases: DD Lock at none against QR Code Barcode Ai Reader's 6. DD Lock also leads on ads (none vs shown) and device support (3 vs 1). QR Code Barcode Ai Reader's advantage is update cadence (weekly vs fortnightly) and chart position (#113 vs unranked). On price there is nothing between them.

Both are free to download. QR Code Barcode Ai Reader sells 5 in-app purchases, starting at $9.99 per 7 days. DD Lock asks for nothing beyond the download.

DD Lock ships an update fortnightly, QR Code Barcode Ai Reader weekly. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | DD Lock | QR Code Barcode Ai Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (1.7K ratings)](https://appshunter.io/ios/app/qr-code-barcode-ai-reader/id6760985637/reviews)** |
| Number of ratings | — | **1.7K** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#113** |
| Size | 14 MB | 57 MB |
| Requires iOS | **9.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SMARTCHIP MICROELECTRONICS CORP.](https://appshunter.io/developer/872823142) | [Quke Technology](https://appshunter.io/developer/1880975939) |

## What reviewers say

### DD Lock

[App page](https://appshunter.io/ios/app/dd-lock/id1459621582)

**Features:** macOS Compatibility

**In-app purchases:** none


### QR Code Barcode Ai Reader

[App page](https://appshunter.io/ios/app/qr-code-barcode-ai-reader/id6760985637)

**Currently charting:** #113 Top Grossing · Utilities (US App Store)

Transform your device into an AI-powered scanner for instant information. Identify objects, translate text, estimate calories, and decode QR codes with advanced visual recognition. Save your scan history and easily create custom QR codes for various purposes.

**Highlights:** AI-powered visual scanner, Object identification and translation, Calorie estimation, Lightning-fast QR & barcode scanning, Offline scanning capability, Custom QR code generation, Smart scan history

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly | $9.99 | per 7 days |
| weekly | $9.99 | per 7 days |
| weekly | $11.99 | per 7 days |
| yearly | $39.99 | per year |
| yearly | $49.99 | per year |


## Frequently asked questions

### Is DD Lock free?

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

### Is QR Code Barcode Ai Reader free?

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

### Do DD Lock or QR Code Barcode Ai Reader have ads?

QR Code Barcode Ai Reader shows ads; DD Lock does not.

### Which is updated more often, DD Lock or QR Code Barcode Ai Reader?

DD Lock ships an update fortnightly, and QR Code Barcode Ai Reader weekly. Most recently, DD Lock was updated on October 14, 2026 and QR Code Barcode Ai Reader 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.*