# UDIDit vs eBook Studio

The clearest difference is update cadence: eBook Studio at every 8 days against UDIDit's every 4 months. eBook Studio also leads on price ($0.99 vs $1.99) and iOS requirement (12.0 vs 16.2). On ads, in-app purchases, chart position and device support there is nothing between them.

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

UDIDit ships an update every 4 months, eBook Studio every 8 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | UDIDit | eBook Studio |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[4.1 (179 ratings)](https://appshunter.io/ios/app/udidit/id326123820/reviews)** | — |
| Number of ratings | **179** | — |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 8 days** |
| Monetization | Free | — |
| Best chart rank | **#72** | #140 |
| Size | 0 MB | 31 MB |
| Requires iOS | 16.2 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bite Size Bytes, Inc.](https://appshunter.io/developer/314920640) | [株式会社キイロ乃カモ](https://appshunter.io/developer/1796537168) |

## What reviewers say

### UDIDit

[App page](https://appshunter.io/ios/app/udidit/id326123820)

**Currently charting:** #72 Top Paid · Developer Tools (US App Store)

Access and share detailed device information directly from your iPhone or iPad. This app provides key specifications like model, iOS version, screen resolution, and storage, simplifying collaboration for developers and testers.

**Highlights:** Comprehensive device details, Model identification and name, iOS version and build number, Screen resolution, Storage capacity, Seamless report sharing

**Features:** 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 UDIDit free?

UDIDit costs $1.99, with no in-app purchases.

### Is eBook Studio free?

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

### Do UDIDit or eBook Studio have ads?

Neither UDIDit nor eBook Studio shows ads.

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

UDIDit ships an update every 4 months, and eBook Studio every 8 days. Most recently, UDIDit was updated on October 31, 2026 and eBook Studio on November 5, 2026.

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

UDIDit currently peaks at #72 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.*