# UniBook vs JustReader

The clearest difference is in-app purchases: JustReader at none against UniBook's 1. JustReader also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. UniBook sells 1 one-off in-app purchase. JustReader asks for nothing beyond the download.

UniBook ships an update every 3 weeks, JustReader fortnightly. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | UniBook | JustReader |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Free |
| Size | 15 MB | 14 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | +4 | 4+ |
| Developer | [Denis Tronin](https://appshunter.io/developer/1446210844) | [Oleksii Koshkin](https://appshunter.io/developer/6781187069) |

## What reviewers say

### UniBook

[App page](https://appshunter.io/ios/app/unibook-read-without-limits/id6757717595)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UniBook Premium | $49.99 | one-time |


### JustReader

[App page](https://appshunter.io/ios/app/justreader-epub-and-fb2-reader/id6781187067)

A free, native reader for Mac, iPad, and iPhone that supports various file formats. It offers a customizable reading experience with multiple themes, fonts, and scroll options, plus on-device translation and no ads or tracking.

**Highlights:** Supports EPUB, FB2, MOBI, HTML, TXT, RTF, DOC/DOCX, Customizable themes, typefaces, and palettes, Continuous scroll, paged, or two-page spread, On-device translation, Chapter navigation and in-book search, No ads or tracking

**In-app purchases:** none


## Frequently asked questions

### Is UniBook free?

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

### Is JustReader free?

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

### Do UniBook or JustReader have ads?

Neither UniBook nor JustReader shows ads.

### Which is updated more often, UniBook or JustReader?

UniBook ships an update every 3 weeks, and JustReader fortnightly. Most recently, UniBook was updated on September 9, 2026 and JustReader on September 23, 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.*