# WF vs A chang

The clearest difference is update cadence: WF at every 6 days against A chang's fortnightly. WF also leads on iOS requirement (11.0 vs 13). 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.

WF ships an update every 6 days, A chang fortnightly. The most recent releases landed on September 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | WF | A chang |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Size | 42 MB | 2 MB |
| Requires iOS | **11.0** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [高敏 黄](https://appshunter.io/developer/1705538002) | [Shenzhen Shenglong Technology Co., Ltd](https://appshunter.io/developer/1748314415) |

## What reviewers say

### WF

[App page](https://appshunter.io/ios/app/wf-sight/id6464112543)

**Features:** macOS Compatibility

**In-app purchases:** none


### A chang

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WF free?

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

### Is A chang free?

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

### Do WF or A chang have ads?

Neither WF nor A chang shows ads.

### Which is updated more often, WF or A chang?

WF ships an update every 6 days, and A chang fortnightly. Most recently, WF was updated on September 25, 2026 and A chang on October 7, 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.*