# C家 vs Popusign

The clearest difference is update cadence: C家 at fortnightly against Popusign's every 5 weeks. 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.

C家 ships an update fortnightly, Popusign every 5 weeks. The most recent releases landed on September 19, 2026 and July 20, 2026 respectively.

## The numbers

| Metric | C家 | Popusign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Size | 189 MB | 114 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [深圳数联天下智能科技有限公司](https://appshunter.io/developer/1694637742) | [General Lighting Electronic Co., Ltd.](https://appshunter.io/developer/1775395523) |

## What reviewers say

### C家

[App page](https://appshunter.io/ios/app/c/id1123394197)

**Features:** macOS Compatibility

**In-app purchases:** none


### Popusign

[App page](https://appshunter.io/ios/app/popusign/id6737228339)

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

**In-app purchases:** none


## Frequently asked questions

### Is C家 free?

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

### Is Popusign free?

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

### Do C家 or Popusign have ads?

Neither C家 nor Popusign shows ads.

### Which is updated more often, C家 or Popusign?

C家 ships an update fortnightly, and Popusign every 5 weeks. Most recently, C家 was updated on September 19, 2026 and Popusign on July 20, 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.*