# 123 ERP vs Lei Kwan

The clearest difference is update cadence: 123 ERP at weekly against Lei Kwan's every 2 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.

123 ERP ships an update weekly, Lei Kwan every 2 months. Both last shipped on October 30, 2026.

## The numbers

| Metric | 123 ERP | Lei Kwan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Size | 16 MB | 19 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BSurprise Company Limited](https://appshunter.io/developer/949258441) | [BIG FISH LIMITED](https://appshunter.io/developer/1649267859) |

## What reviewers say

### 123 ERP

[App page](https://appshunter.io/ios/app/123-erp/id6473011973)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lei Kwan

[App page](https://appshunter.io/ios/app/lei-kwan/id6738119956)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 123 ERP free?

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

### Is Lei Kwan free?

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

### Do 123 ERP or Lei Kwan have ads?

Neither 123 ERP nor Lei Kwan shows ads.

### Which is updated more often, 123 ERP or Lei Kwan?

123 ERP ships an update weekly, and Lei Kwan every 2 months. Most recently, 123 ERP was updated on October 30, 2026 and Lei Kwan on October 30, 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.*