# Thetis Tools vs 千阅

The clearest difference is in-app purchases: Thetis Tools at none against 千阅's 4. Thetis Tools also leads on ads (none vs shown). 千阅's advantage is update cadence (every 2 weeks vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 千阅 sells 4 in-app purchases, starting at $0.99 per month. Thetis Tools asks for nothing beyond the download.

Thetis Tools ships an update every 7 months, 千阅 every 2 weeks. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Thetis Tools | 千阅 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (18 ratings)](https://appshunter.io/ios/app/id1665963317/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 64.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 123 MB |
| Requires iOS | 14.0 | **13** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Thetis srl](https://appshunter.io/developer/397584184) | [广盛 林](https://appshunter.io/developer/1665791959) |

## What reviewers say

### Thetis Tools

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 千阅

[App page](https://appshunter.io/ios/app/id1665963317)

This app is a feature-rich TXT reader designed for book lovers. It offers a clean interface with extensive customization options, including renaming books, changing covers, installing fonts, and applying over 70 themes. Enjoy a comfortable reading experience with additional features like text-to-speech, all available for free.

**Highlights:** TXT reading tool, Rename books and authors, Change book covers, Install custom fonts, Switch 70+ themes, Customizable themes, Text-to-speech

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | per month |
| 季度会员 | $1.99 | per 3 months |
| 年度会员 | $8.99 | per year |
| 永久会员 | $19.99 | one-time |


## Frequently asked questions

### Is Thetis Tools free?

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

### Is 千阅 free?

千阅 is free to download, with in-app purchases available.

### Do Thetis Tools or 千阅 have ads?

千阅 shows ads; Thetis Tools does not.

### Which is updated more often, Thetis Tools or 千阅?

Thetis Tools ships an update every 7 months, and 千阅 every 2 weeks. Most recently, Thetis Tools was updated on October 26, 2026 and 千阅 on November 3, 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.*