# C6协同v3.9 vs E

The clearest difference is iOS requirement: C6协同v3.9 at 7.0 against E's 13.0. 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.

C6协同v3.9 ships an update every 3 weeks, E monthly. The most recent releases landed on September 17, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | C6协同v3.9 | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 21 MB | 185 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [BEIJING JINHER SOFTWARE CO.LTD.](https://appshunter.io/developer/473901494) | [XinGuang Technology Co.,Ltd.](https://appshunter.io/developer/1130851011) |

## What reviewers say

### C6协同v3.9

[App page](https://appshunter.io/ios/app/c6v39/id1173412813)

**Features:** macOS Compatibility

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-lab-mc/id1434041094)

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

**In-app purchases:** none


## Frequently asked questions

### Is C6协同v3.9 free?

C6协同v3.9 is free to download, with no in-app purchases.

### Is E free?

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

### Do C6协同v3.9 or E have ads?

Neither C6协同v3.9 nor E shows ads.

### Which is updated more often, C6协同v3.9 or E?

C6协同v3.9 ships an update every 3 weeks, and E monthly. Most recently, C6协同v3.9 was updated on September 17, 2026 and E on September 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*