# Thorium Reader — user reviews

> 5 indexed App Store user reviews of Thorium Reader by Readium, rated 3.90/5 from 9 ratings.

- Source: https://appshunter.io/ios/app/thorium-reader/id6745025189/reviews
- App overview in markdown: https://appshunter.io/ios/app/thorium-reader/id6745025189.md
- Rating breakdown: 5★ 4 · 4★ 3 · 3★ 0 · 2★ 1 · 1★ 1

## Most critical reviews (5 lowest-rated)

### 1/5 — Third party programs used

*2026-08-14*

I see that there are a lot of third party programs used, among them some from Google. You say some data is collected but not personally linked? Data shared with google? What data? If using google, how much privacy?

**Developer response:** As documented on our App Store page, Thorium Reader only collects anonymous data related to crash reporting and overall usage through Firebase. A link to our privacy policy is also available.

### 2/5 — Promising but could use more tweaks

*2026-07-09*

It has the potential to be great but I need more font options but more importantly, I need a highlighting function.

**Developer response:** Hello,

Thank you for your feedback.

A highlight feature is planned, but we'd like this feature to be interoperable with other reading apps. There's currently an on-going effort to standardize this feature at W3C, we plan on implementing highlight support as soon as the specification becomes stable enough to be implemented (this should be later this year).

In terms of font options, is there any particular font or font type that you're looking for? Feel free to contact us at mobile@thoriumreader.com for such feedback as well.

Thanks,
Thorium Reader Team

### 4/5 — New go-to for epubs

*2026-08-23*

Just downloaded it, love the simplicity. Range of choices is just enough without complicating the reading experience. 👍👍

### 4/5 — Very promising!

*2026-07-28*

I’ve been looking for a replacement for Readest since they’ve started paywalling some essential features.

So far, I really like Thorium reader! Like a previous user said, highlighting would be a nice feature to have. But, that appears to be in process.

Additionally, I’d like to see scroll mode on iOS and a sync functionality with desktop. Particularly WebDAV.

Overall, I really like what I’m seeing! I do think the mobile app is much more refined design-wise than the desktop app. I find the Mac desktop app (intel) a bit clunky and not very visually appealing.

**Developer response:** Hello,

Highlights and scrolling mode for EPUB (it's already available for PDF) are both on our radar for this year. For sync, we'll support OPDS (including progression support) later this year, which will make Thorium Reader compatible with multiple self-hosting solutions. A standalone sync feature is further in the future with no ETA yet since we'd like to ship an Android app before.
We'll continue to stick as closely as possible to iOS/iPadOS/macOS to deliver a fully native experience.

Thanks,
Thorium Reader Team

### 5/5 — Clean interface

*2026-08-24*

Minimal and quite comforting

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*