# C4 vs CIMOS鸿书

The clearest difference is in-app purchases: CIMOS鸿书 at none against C4's 7. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. C4 sells 7 one-off in-app purchases. CIMOS鸿书 asks for nothing beyond the download.

C4 ships an update fortnightly, CIMOS鸿书 every 4 weeks. The most recent releases landed on October 14, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | C4 | CIMOS鸿书 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Size | 77 MB | 53 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CRIonline](https://appshunter.io/developer/658082939) | [Qingdao City Brain Investment Development Co., Ltd](https://appshunter.io/developer/1531980409) |

## What reviewers say

### C4

[App page](https://appshunter.io/ios/app/c4-for-all-creators/id1546952839)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP | $0.99 | one-time |
| VIP | $1.99 | one-time |
| VIP | $2.99 | one-time |
| SVIP 1个月 | $5.99 | one-time |
| SVIP | $6.99 | one-time |
| SVIP | $8.99 | one-time |
| SVIP+ 1个月 | $8.99 | one-time |


### CIMOS鸿书

[App page](https://appshunter.io/ios/app/cimos/id6466782104)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is C4 free?

C4 is free to download, with in-app purchases available.

### Is CIMOS鸿书 free?

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

### Do C4 or CIMOS鸿书 have ads?

Neither C4 nor CIMOS鸿书 shows ads.

### Which is updated more often, C4 or CIMOS鸿书?

C4 ships an update fortnightly, and CIMOS鸿书 every 4 weeks. Most recently, C4 was updated on October 14, 2026 and CIMOS鸿书 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.*