# 锁掌柜/QRMaster vs 光影智控

The clearest difference is iOS requirement: 光影智控 at 10.0 against 锁掌柜/QRMaster's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

锁掌柜/QRMaster ships an update every 3 weeks, 光影智控 every 2 weeks. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 锁掌柜/QRMaster | 光影智控 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 85 MB | 60 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [GuangZhouChangLianInformationTechnologyCompany](https://appshunter.io/developer/977124142) | [深圳微光星联科技有限公司](https://appshunter.io/developer/1785175164) |

## What reviewers say

### 锁掌柜/QRMaster

[App page](https://appshunter.io/ios/app/qrmaster/id979781966)

**Features:** macOS Compatibility

**In-app purchases:** none


### 光影智控

[App page](https://appshunter.io/ios/app/id6739422131)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 锁掌柜/QRMaster free?

锁掌柜/QRMaster is free to download, with no in-app purchases.

### Is 光影智控 free?

光影智控 is free to download, with no in-app purchases.

### Do 锁掌柜/QRMaster or 光影智控 have ads?

Neither 锁掌柜/QRMaster nor 光影智控 shows ads.

### Which is updated more often, 锁掌柜/QRMaster or 光影智控?

锁掌柜/QRMaster ships an update every 3 weeks, and 光影智控 every 2 weeks. Most recently, 锁掌柜/QRMaster was updated on October 26, 2026 and 光影智控 on October 6, 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.*