# Preview App vs eBook Studio

The clearest difference is update cadence: eBook Studio at every 8 days against Preview App's every 13 months. eBook Studio also leads on chart position (#141 vs unranked) and price ($0.99 vs $1.99). On ads, in-app purchases and device support there is nothing between them.

Preview App costs $1.99 and eBook Studio $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Preview App ships an update every 13 months, eBook Studio every 8 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | Preview App | eBook Studio |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 8 days** |
| Best chart rank | — | **#141** |
| Size | 8 MB | 31 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cangmu Technology Co., Ltd](https://appshunter.io/developer/1736424342) | [株式会社キイロ乃カモ](https://appshunter.io/developer/1796537168) |

## What reviewers say

### Preview App

[App page](https://appshunter.io/ios/app/preview-app-store-simulator/id1626025800)

**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:** #141 Top Paid · Developer Tools (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Preview App free?

Preview App costs $1.99, with no in-app purchases.

### Is eBook Studio free?

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

### Do Preview App or eBook Studio have ads?

Neither Preview App nor eBook Studio shows ads.

### Which is updated more often, Preview App or eBook Studio?

Preview App ships an update every 13 months, and eBook Studio every 8 days. Most recently, Preview App was updated on October 30, 2026 and eBook Studio on October 30, 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.*