# Dark Reader for Safari vs Thetis Tools

The clearest difference is price: Thetis Tools at Free against Dark Reader for Safari's $4.99. Dark Reader for Safari's advantage is update cadence (every 2 months vs every 7 months) and chart position (#21 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Thetis Tools is free to download; Dark Reader for Safari costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Dark Reader for Safari ships an update every 2 months, Thetis Tools every 7 months. The most recent releases landed on November 2, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Dark Reader for Safari | Thetis Tools |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.3 (285 ratings)](https://appshunter.io/ios/app/dark-reader-for-safari/id1438243180/reviews)** | — |
| Number of ratings | **285** | — |
| Positive reviews | 64.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Paid | — |
| Best chart rank | **#21** | — |
| Size | 4 MB | 50 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dark Reader Ltd](https://appshunter.io/developer/1438243179) | [Thetis srl](https://appshunter.io/developer/397584184) |

## What reviewers say

### Dark Reader for Safari

[App page](https://appshunter.io/ios/app/dark-reader-for-safari/id1438243180)

**Currently charting:** #21 Top Paid · Productivity, #187 Top Paid (US App Store)

This Safari extension transforms websites into dark themes, reducing eye strain and improving readability. It offers customizable brightness, contrast, and color themes, and seamlessly integrates with system dark mode. Enjoy a comfortable browsing experience, especially in low light conditions.

**Highlights:** Creates dark themes for websites, Adjustable brightness and contrast, Multiple color theme presets, Customizable background and text colors, Enable/disable for specific websites, Syncs with system dark mode

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Works well on most websites
- 🚀 Fast and efficient
- 💡 Customizable settings
- 👍 Preserves website design
- 👍 Easy to enable/disable per site

**What reviewers complain about**

- 🐛 Inconsistent performance on some websites
- 🐛 Occasional rendering issues
- 🔒 Privacy concerns about data access
- 💰 Paid extension when free versions exist
- 🔋 Can slow down Safari performance

**Reported bugs**

- Extension stops working after Safari has been open for a while
- Fails to load on certain websites
- Inverts colors incorrectly on some websites

**Requested features**

- Per-site settings for Dynamic vs Filter modes
- Automatic dark mode based on time of day
- Ability to customize accent colors
- Support for PDF documents
- Sync settings across devices


### Thetis Tools

[App page](https://appshunter.io/ios/app/thetis-tools/id1460268980)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dark Reader for Safari free?

Dark Reader for Safari costs $4.99, with no in-app purchases.

### Is Thetis Tools free?

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

### Do Dark Reader for Safari or Thetis Tools have ads?

Neither Dark Reader for Safari nor Thetis Tools shows ads.

### Which is updated more often, Dark Reader for Safari or Thetis Tools?

Dark Reader for Safari ships an update every 2 months, and Thetis Tools every 7 months. Most recently, Dark Reader for Safari was updated on November 2, 2026 and Thetis Tools on October 26, 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.*