# Thetis Tools vs Speed Reader for Speed Reading

The clearest difference is in-app purchases: Thetis Tools at none against Speed Reader for Speed Reading's 7. Thetis Tools also leads on iOS requirement (14.0 vs 16.0). Speed Reader for Speed Reading's advantage is update cadence (every 9 days vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Speed Reader for Speed Reading sells 7 one-off in-app purchases. Thetis Tools asks for nothing beyond the download.

Thetis Tools ships an update every 7 months, Speed Reader for Speed Reading every 9 days. The most recent releases landed on September 10, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | Thetis Tools | Speed Reader for Speed Reading |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (6 ratings)](https://appshunter.io/ios/app/speed-reader-for-speed-reading/id6447472154/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 39 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Thetis srl](https://appshunter.io/developer/397584184) | [Niklas Baudy](https://appshunter.io/developer/1543597939) |

## What reviewers say

### Thetis Tools

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Speed Reader for Speed Reading

[App page](https://appshunter.io/ios/app/speed-reader-for-speed-reading/id6447472154)

Enhance your reading comprehension and speed with a tool that displays one word at a time. Gradually increase your reading pace from 300 to over 750 words per minute through consistent practice. Customize your experience with various themes and visual aids.

**Highlights:** One-word-at-a-time display, Adjustable words per minute, Spritz speed reading technique, Visual line support, Custom text input, Text sharing from other apps, Dark and light themes

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Spritz option | $1.99 | one-time |
| Unlimited colors | $1.99 | one-time |
| Unlimited Speed Read files | $1.99 | one-time |
| Unlimited history | $1.99 | one-time |
| Unlimited Speed Read links | $1.99 | one-time |
| Remove ads | $2.99 | one-time |
| Premium - Unlock everything | $11.99 | one-time |


## Frequently asked questions

### Is Thetis Tools free?

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

### Is Speed Reader for Speed Reading free?

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

### Do Thetis Tools or Speed Reader for Speed Reading have ads?

Neither Thetis Tools nor Speed Reader for Speed Reading shows ads.

### Which is updated more often, Thetis Tools or Speed Reader for Speed Reading?

Thetis Tools ships an update every 7 months, and Speed Reader for Speed Reading every 9 days. Most recently, Thetis Tools was updated on September 10, 2026 and Speed Reader for Speed Reading on August 19, 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.*