# Project Gutenberg Ebooks vs Self Study CS

The clearest difference is in-app purchases: Self Study CS at none against Project Gutenberg Ebooks's 3. Self Study CS also leads on update cadence (daily vs every 3 weeks). Project Gutenberg Ebooks's advantage is ads (none vs shown) and iOS requirement (15.1 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Project Gutenberg Ebooks sells 3 in-app purchases, starting at $4.99 per 7 days. Self Study CS asks for nothing beyond the download.

Project Gutenberg Ebooks ships an update every 3 weeks, Self Study CS daily. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Project Gutenberg Ebooks | Self Study CS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (45 ratings)](https://appshunter.io/ios/app/project-gutenberg-ebooks/id6755909445/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Freemium | — |
| Size | 41 MB | 15 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Natalja Morozova](https://appshunter.io/developer/1852342078) | [APPS BAY LIMITED](https://appshunter.io/developer/1599035519) |

## What reviewers say

### Project Gutenberg Ebooks

[App page](https://appshunter.io/ios/app/project-gutenberg-ebooks/id6755909445)

Access and read thousands of public domain ebooks from Project Gutenberg. This app offers a customizable reader, smart search, offline access, and annotation tools for a personalized reading experience.

**Highlights:** Thousands of public domain ebooks, Smart ebook search and filtering, Offline reading capability, Ebook annotations and notes, Customizable reader with themes, Multi-language support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Monthly Premium | $9.99 | per month |
| Yearly Premium | $29.99 | per year |


### Self Study CS

[App page](https://appshunter.io/ios/app/self-study-cs-learn-to-code/id6765632695)

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

**In-app purchases:** none


## Frequently asked questions

### Is Project Gutenberg Ebooks free?

Project Gutenberg Ebooks is free to download, with in-app purchases available.

### Is Self Study CS free?

Self Study CS is free to download, with no in-app purchases.

### Do Project Gutenberg Ebooks or Self Study CS have ads?

Self Study CS shows ads; Project Gutenberg Ebooks does not.

### Which is updated more often, Project Gutenberg Ebooks or Self Study CS?

Project Gutenberg Ebooks ships an update every 3 weeks, and Self Study CS daily. Most recently, Project Gutenberg Ebooks was updated on October 11, 2026 and Self Study CS on October 7, 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.*