# 锁掌柜/QRMaster vs ERdepot

The clearest difference is in-app purchases: 锁掌柜/QRMaster at none against ERdepot's 1. 锁掌柜/QRMaster also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ERdepot sells 1 one-off in-app purchase. 锁掌柜/QRMaster asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 锁掌柜/QRMaster | ERdepot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/erdepot/id6737148150/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Free |
| Size | 85 MB | 10 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GuangZhouChangLianInformationTechnologyCompany](https://appshunter.io/developer/977124142) | [君宇 方](https://appshunter.io/developer/1746520472) |

## What reviewers say

### 锁掌柜/QRMaster

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ERdepot

[App page](https://appshunter.io/ios/app/erdepot/id6737148150)

Track foreign currency values and monitor exchange rate fluctuations with real-time data. This app automatically converts total asset values and displays historical trend charts for informed investment decisions.

**Highlights:** Foreign currency asset management, Automatic total value conversion, Real-time exchange rate display, Multi-currency switching, Historical exchange rate trend charts (7 days to 10 years), Investment return calculation

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sponsor the ERdepot app | $1.00 | one-time |


## Frequently asked questions

### Is 锁掌柜/QRMaster free?

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

### Is ERdepot free?

ERdepot is free to download, with in-app purchases available.

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

Neither 锁掌柜/QRMaster nor ERdepot shows ads.

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

锁掌柜/QRMaster ships an update every 3 weeks, and ERdepot every 3 weeks. Most recently, 锁掌柜/QRMaster was updated on October 8, 2026 and ERdepot on October 18, 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.*