# systemsoundtest vs eBook Studio

The clearest difference is update cadence: eBook Studio at every 8 days against systemsoundtest's every 24 months. eBook Studio also leads on iOS requirement (12.0 vs 18.6). On price, ads, in-app purchases and chart position there is nothing between them.

systemsoundtest costs $0.49 and eBook Studio $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

systemsoundtest ships an update every 24 months, eBook Studio every 8 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | systemsoundtest | eBook Studio |
| --- | --- | --- |
| Price | **$0.49** | $0.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/systemsoundtest/id6737198486/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 8 days** |
| Monetization | Paid | — |
| Best chart rank | **#123** | #140 |
| Size | 1 MB | 31 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHUNJI KUSAKA](https://appshunter.io/developer/1738810004) | [株式会社キイロ乃カモ](https://appshunter.io/developer/1796537168) |

## What reviewers say

### systemsoundtest

[App page](https://appshunter.io/ios/app/systemsoundtest/id6737198486)

**Currently charting:** #123 Top Paid · Developer Tools (US App Store)

Explore over 100 official iOS system sounds with a clean, modern interface. Tap buttons to instantly play notification tones and alerts, with dynamic visual feedback.

**Highlights:** Over 100 official iOS system sounds, Instant sound playback, Clean, user-friendly interface, Dynamic button color changes, Explore notification tones and alerts

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

**In-app purchases:** none


### eBook Studio

[App page](https://appshunter.io/ios/app/ebook-studio-create-and-publish/id6756200055)

**Currently charting:** #140 Top Paid · Developer Tools (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is systemsoundtest free?

systemsoundtest costs $0.49, with no in-app purchases.

### Is eBook Studio free?

eBook Studio costs $0.99, with no in-app purchases.

### Do systemsoundtest or eBook Studio have ads?

Neither systemsoundtest nor eBook Studio shows ads.

### Which is updated more often, systemsoundtest or eBook Studio?

systemsoundtest ships an update every 24 months, and eBook Studio every 8 days. Most recently, systemsoundtest was updated on October 30, 2026 and eBook Studio on October 30, 2026.

### Which is more popular, systemsoundtest or eBook Studio?

systemsoundtest currently peaks at #123 in the App Store charts, and eBook Studio at #140. Chart position reflects recent download velocity rather than total install base.

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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.*