# 锁掌柜/QRMaster vs cherub

The clearest difference is update cadence: 锁掌柜/QRMaster at every 3 weeks against cherub's every 3 months. 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.

锁掌柜/QRMaster ships an update every 3 weeks, cherub every 3 months. The most recent releases landed on October 8, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 锁掌柜/QRMaster | cherub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/cherub/id1301298728/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | — | Free |
| Size | 85 MB | 17 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GuangZhouChangLianInformationTechnologyCompany](https://appshunter.io/developer/977124142) | [肖荣 覃](https://appshunter.io/developer/1245007092) |

## What reviewers say

### 锁掌柜/QRMaster

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

**Features:** macOS Compatibility

**In-app purchases:** none


### cherub

[App page](https://appshunter.io/ios/app/cherub/id1301298728)

This utility app provides real-time body temperature monitoring, alerting you when your temperature exceeds a set threshold. It also keeps a history of your measurements to track changes over time, enabling timely health interventions.

**Highlights:** Real-time temperature measurement, High temperature alarm setting, Continuous alarm reminders, History record of measurements, Body temperature change tracking

**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 cherub free?

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

### Do 锁掌柜/QRMaster or cherub have ads?

Neither 锁掌柜/QRMaster nor cherub shows ads.

### Which is updated more often, 锁掌柜/QRMaster or cherub?

锁掌柜/QRMaster ships an update every 3 weeks, and cherub every 3 months. Most recently, 锁掌柜/QRMaster was updated on October 8, 2026 and cherub on September 22, 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.*