# Ebook Central vs Underlined

The clearest difference is in-app purchases: Ebook Central at none against Underlined's 2. Ebook Central also leads on chart position (#192 vs unranked) and device support (4 vs 1). Underlined's advantage is update cadence (fortnightly vs every 2 months). On price and ads there is nothing between them.

Both are free to download. Underlined sells 2 in-app purchases, starting at $2.99 per month. Ebook Central asks for nothing beyond the download.

Ebook Central ships an update every 2 months, Underlined fortnightly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Ebook Central | Underlined |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (38 ratings)](https://appshunter.io/ios/app/ebook-central/id6502346051/reviews)** | — |
| Number of ratings | **38** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Best chart rank | **#192** | — |
| Size | 50 MB | 24 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Clarivate Analytics (US) LLC](https://appshunter.io/developer/1291059975) | [Mert Arman](https://appshunter.io/developer/6795348333) |

## What reviewers say

### Ebook Central

[App page](https://appshunter.io/ios/app/ebook-central/id6502346051)

**Currently charting:** #192 Top Free · Book (US App Store)

Read downloaded ebooks from your library securely and accessibly, anytime and anywhere. This app offers a modern reading experience with streamlined authentication and an intuitive interface, syncing your progress across devices for uninterrupted research, even offline.

**Highlights:** Offline reading, Secure reading experience, Streamlined authentication, Intuitive interface, Cross-device syncing, Accessible reading

**Features:** Vision Pro support

**In-app purchases:** none


### Underlined

[App page](https://appshunter.io/ios/app/underlined-bookshelf-tracker/id6805132642)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Underlined - Monthly | $2.99 | per month |
| Underlined - Yearly | $19.99 | per year |


## Frequently asked questions

### Is Ebook Central free?

Ebook Central is free to download, with no in-app purchases.

### Is Underlined free?

Underlined is free to download, with in-app purchases available.

### Do Ebook Central or Underlined have ads?

Neither Ebook Central nor Underlined shows ads.

### Which is updated more often, Ebook Central or Underlined?

Ebook Central ships an update every 2 months, and Underlined fortnightly. Most recently, Ebook Central was updated on October 25, 2026 and Underlined on October 25, 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.*