# Stroop Effect vs Readability

The clearest difference is in-app purchases: Stroop Effect at none against Readability's 2. Stroop Effect also leads on iOS requirement (11.0 vs 16.4). Readability's advantage is update cadence (fortnightly vs every 10 months) and chart position (#171 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. Readability sells 2 in-app purchases, starting at $19.99 per month. Stroop Effect asks for nothing beyond the download.

Stroop Effect ships an update every 10 months, Readability fortnightly. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Stroop Effect | Readability |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (25K ratings)](https://appshunter.io/ios/app/readability-learn-to-read/id1477213383/reviews)** |
| Number of ratings | — | **25K** |
| Positive reviews | — | 55.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Fortnightly** |
| Monetization | — | Subscription |
| Best chart rank | — | **#171** |
| Size | 58 MB | 282 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michal Mandrysz](https://appshunter.io/developer/454758944) | [e4site Inc.](https://appshunter.io/developer/1477213382) |

## What reviewers say

### Stroop Effect

[App page](https://appshunter.io/ios/app/stroop-effect-tot/id1443395928)

**Features:** macOS Compatibility

**In-app purchases:** none


### Readability

[App page](https://appshunter.io/ios/app/readability-learn-to-read/id1477213383)

**Currently charting:** #171 Top Grossing · Education (US App Store)

This app uses AI-powered voice technology to provide personalized reading tutoring for children. It listens as kids read aloud, offers pronunciation correction, and assesses comprehension through interactive questions. The app also builds vocabulary and allows parents to track progress.

**Highlights:** AI-powered voice recognition for reading practice, Real-time pronunciation correction, Interactive voice-based comprehension questions, Personalized vocabulary lists, Parent dashboard for progress tracking, Engaging grade-level stories with illustrations

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Readability Tutor | $19.99 | per month |
| Readability Tutor Annual | $139.99 | per year |

**What reviewers like**

- 👍 Helpful for struggling readers
- 🚀 Improves reading fluency
- 💡 Engaging for kids
- 👍 Useful data and progress tracking

**What reviewers complain about**

- 🐛 Voice recognition issues
- 🐛 Inaccurate comprehension tests
- 💰 Expensive subscription
- 🐛 Glitchy performance

**Reported bugs**

- App charges for free trial
- Subscription cancellation issues
- Inconsistent app behavior
- Compatibility problems on some devices

**Requested features**

- More customization options for text and background
- Improved voice recognition accuracy
- Expanded book selection
- Better comprehension testing


## Frequently asked questions

### Is Stroop Effect free?

Stroop Effect is free to download, with no in-app purchases.

### Is Readability free?

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

### Do Stroop Effect or Readability have ads?

Neither Stroop Effect nor Readability shows ads.

### Which is updated more often, Stroop Effect or Readability?

Stroop Effect ships an update every 10 months, and Readability fortnightly. Most recently, Stroop Effect was updated on October 7, 2026 and Readability on October 18, 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.*