# 差圧チェッカー vs System Scope

The clearest difference is update cadence: System Scope at every 6 weeks against 差圧チェッカー's every 3 months. 差圧チェッカー's advantage is iOS requirement (13.0 vs 17.0). 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.

差圧チェッカー ships an update every 3 months, System Scope every 6 weeks. The most recent releases landed on September 16, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 差圧チェッカー | System Scope |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 17 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ryonetsu Kogyou co.,ltd.](https://appshunter.io/developer/887824730) | [kensuke ueda](https://appshunter.io/developer/961845390) |

## What reviewers say

### 差圧チェッカー

[App page](https://appshunter.io/ios/app/id1561700741)

**In-app purchases:** none


### System Scope

[App page](https://appshunter.io/ios/app/system-scope-cpu-and-memory/id6791599703)

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

**In-app purchases:** none


## Frequently asked questions

### Is 差圧チェッカー free?

差圧チェッカー is free to download, with no in-app purchases.

### Is System Scope free?

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

### Do 差圧チェッカー or System Scope have ads?

Neither 差圧チェッカー nor System Scope shows ads.

### Which is updated more often, 差圧チェッカー or System Scope?

差圧チェッカー ships an update every 3 months, and System Scope every 6 weeks. Most recently, 差圧チェッカー was updated on September 16, 2026 and System Scope on September 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.*