# 爱温士 vs System 911

The clearest difference is update cadence: 爱温士 at every 10 days against System 911's every 6 weeks. System 911's advantage is iOS requirement (9 vs 12.0). 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.

爱温士 ships an update every 10 days, System 911 every 6 weeks. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 爱温士 | System 911 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 6 weeks |
| Size | 12 MB | 29 MB |
| Requires iOS | 12.0 | **9** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [军 王](https://appshunter.io/developer/955358588) | [学新 黄](https://appshunter.io/developer/1450715299) |

## What reviewers say

### 爱温士

[App page](https://appshunter.io/ios/app/id1031138709)

**Features:** macOS Compatibility

**In-app purchases:** none


### System 911

[App page](https://appshunter.io/ios/app/system-911/id1497419202)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 爱温士 free?

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

### Is System 911 free?

System 911 is free to download, with no in-app purchases.

### Do 爱温士 or System 911 have ads?

Neither 爱温士 nor System 911 shows ads.

### Which is updated more often, 爱温士 or System 911?

爱温士 ships an update every 10 days, and System 911 every 6 weeks. Most recently, 爱温士 was updated on October 9, 2026 and System 911 on October 10, 2026.

---

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