# A chang vs QR FLOW

The clearest difference is ads: A chang at none against QR FLOW's shown. A chang also leads on iOS requirement (13 vs 15.1). QR FLOW's advantage is update cadence (daily vs fortnightly). On price, 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.

A chang ships an update fortnightly, QR FLOW daily. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | A chang | QR FLOW |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Daily** |
| Size | 2 MB | 34 MB |
| Requires iOS | **13** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Shenglong Technology Co., Ltd](https://appshunter.io/developer/1748314415) | [Omar Bilbisi](https://appshunter.io/developer/1807341651) |

## What reviewers say

### A chang

[App page](https://appshunter.io/ios/app/a-chang/id6744846154)

**Features:** macOS Compatibility

**In-app purchases:** none


### QR FLOW

[App page](https://appshunter.io/ios/app/qr-flow/id6761486458)

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

**In-app purchases:** none


## Frequently asked questions

### Is A chang free?

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

### Is QR FLOW free?

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

### Do A chang or QR FLOW have ads?

QR FLOW shows ads; A chang does not.

### Which is updated more often, A chang or QR FLOW?

A chang ships an update fortnightly, and QR FLOW daily. Most recently, A chang was updated on October 7, 2026 and QR FLOW on October 25, 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.*