# ScanPro vs Duong Quynh

The clearest difference is update cadence: ScanPro at every 3 weeks against Duong Quynh's every 4 months. Duong Quynh's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScanPro ships an update every 3 weeks, Duong Quynh every 4 months. The most recent releases landed on October 20, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | ScanPro | Duong Quynh |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 282 MB | 87 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thinh Le](https://appshunter.io/developer/1668567222) | [Thong Ho](https://appshunter.io/developer/1631859461) |

## What reviewers say

### ScanPro

[App page](https://appshunter.io/ios/app/scanpro/id1668567220)

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

**In-app purchases:** none


### Duong Quynh

[App page](https://appshunter.io/ios/app/duong-quynh/id6745511795)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ScanPro free?

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

### Is Duong Quynh free?

Duong Quynh is free to download, with no in-app purchases.

### Do ScanPro or Duong Quynh have ads?

Neither ScanPro nor Duong Quynh shows ads.

### Which is updated more often, ScanPro or Duong Quynh?

ScanPro ships an update every 3 weeks, and Duong Quynh every 4 months. Most recently, ScanPro was updated on October 20, 2026 and Duong Quynh on September 28, 2026.

---

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