# Thorium Reader vs Nimbus Speed Reader

The clearest difference is review sentiment: Nimbus Speed Reader at 100% against Thorium Reader's 40%. Nimbus Speed Reader also leads on rating (5.0 vs 3.5) and update cadence (every 2 days vs every 3 weeks). Thorium Reader's advantage is in-app purchases (none vs 3) and ratings volume (13 vs 3). On price, ads and device support there is nothing between them.

Both are free to download. Nimbus Speed Reader sells 3 in-app purchases, starting at $1.99 per 7 days. Thorium Reader asks for nothing beyond the download.

Nimbus Speed Reader holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 13 and 3 respectively. Written reviews point the same way: 40% of Thorium Reader's written reviews are positive against 100% of Nimbus Speed Reader's.

Thorium Reader ships an update every 3 weeks, Nimbus Speed Reader every 2 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Thorium Reader | Nimbus Speed Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (13 ratings)](https://appshunter.io/ios/app/thorium-reader/id6745025189/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/nimbus-speed-reader/id6759544681/reviews)** |
| Number of ratings | **13** | 3 |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | **Free** | Freemium |
| Size | 46 MB | 94 MB |
| Requires iOS | 26.1 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Readium](https://appshunter.io/developer/1232183924) | [Raul Perez](https://appshunter.io/developer/1879422249) |

## What reviewers say

### Thorium Reader

[App page](https://appshunter.io/ios/app/thorium-reader/id6745025189)

Organize all your ebooks, comics, and manga in a single app. Customize your reading experience with adjustable text, fonts, and themes. Listen to audiobooks and zoom into visual content with ease.

**Highlights:** Unified bookshelf for all content, Adjustable text size and spacing, Multiple font options, Text-to-speech audio playback, Zoom for comics and manga, Offline dictionary and translation, Import EPUB, PDF, CBZ files

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

**In-app purchases:** none


### Nimbus Speed Reader

[App page](https://appshunter.io/ios/app/nimbus-speed-reader/id6759544681)

This app functions as a comprehensive e-reader, allowing you to import EPUBs, PDFs, and web articles into a single library. It features a speed reading mode that can triple your reading speed, with adjustable pace and chunk size for a personalized experience.

**Highlights:** Import EPUB, PDF, web articles, Adjustable speed reading (WPM, chunk size), Distraction-free focus mode, Automatic progress tracking, Multiple visual palettes (light/dark mode), Integrated e-reader library

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $1.99 | per 7 days |
| Pro Monthly | $3.99 | per month |
| Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is Thorium Reader free?

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

### Is Nimbus Speed Reader free?

Nimbus Speed Reader is free to download, with in-app purchases available.

### Which has better reviews, Thorium Reader or Nimbus Speed Reader?

Nimbus Speed Reader is rated higher. Thorium Reader averages 3.5 out of 5 from 13 ratings, while Nimbus Speed Reader averages 5.0 from 3 ratings.

### Do Thorium Reader or Nimbus Speed Reader have ads?

Neither Thorium Reader nor Nimbus Speed Reader shows ads.

### Which is updated more often, Thorium Reader or Nimbus Speed Reader?

Thorium Reader ships an update every 3 weeks, and Nimbus Speed Reader every 2 days. Most recently, Thorium Reader was updated on October 30, 2026 and Nimbus Speed Reader on October 28, 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.*