# 中异ERP vs Polying 2

The clearest difference is update cadence: Polying 2 at every 3 weeks against 中异ERP's every 4 months. 中异ERP's advantage is iOS requirement (12.0 vs 16.6). 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.

中异ERP ships an update every 4 months, Polying 2 every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 中异ERP | Polying 2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 31 MB | 1 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [经强 张](https://appshunter.io/developer/1244444743) | [深圳艾斯特创新科技有限公司](https://appshunter.io/developer/1405370693) |

## What reviewers say

### 中异ERP

[App page](https://appshunter.io/ios/app/erp/id1537970624)

**Features:** macOS Compatibility

**In-app purchases:** none


### Polying 2

[App page](https://appshunter.io/ios/app/polying-2/id6762327888)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 中异ERP free?

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

### Is Polying 2 free?

Polying 2 is free to download, with no in-app purchases.

### Do 中异ERP or Polying 2 have ads?

Neither 中异ERP nor Polying 2 shows ads.

### Which is updated more often, 中异ERP or Polying 2?

中异ERP ships an update every 4 months, and Polying 2 every 3 weeks. Most recently, 中异ERP was updated on November 3, 2026 and Polying 2 on November 5, 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.*