# System Sound vs API MeasurePro

The clearest difference is ads: API MeasurePro at none against System Sound's shown. API MeasurePro also leads on iOS requirement (13.0 vs 15.8.3). System Sound's advantage is update cadence (every 2 weeks vs every 3 months). On price, 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.

System Sound ships an update every 2 weeks, API MeasurePro every 3 months. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | System Sound | API MeasurePro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Size | 36 MB | 20 MB |
| Requires iOS | 15.8.3 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Automated Precision Inc.](https://appshunter.io/developer/1846172575) |

## What reviewers say

### System Sound

[App page](https://appshunter.io/ios/app/system-sound/id6504702118)

**Features:** macOS Compatibility

**In-app purchases:** none


### API MeasurePro

[App page](https://appshunter.io/ios/app/api-measurepro/id6754576227)

**In-app purchases:** none


## Frequently asked questions

### Is System Sound free?

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

### Is API MeasurePro free?

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

### Do System Sound or API MeasurePro have ads?

System Sound shows ads; API MeasurePro does not.

### Which is updated more often, System Sound or API MeasurePro?

System Sound ships an update every 2 weeks, and API MeasurePro every 3 months. Most recently, System Sound was updated on October 20, 2026 and API MeasurePro on October 16, 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.*