# Psychology vs ECCAT

The clearest difference is in-app purchases: ECCAT at none against Psychology's 5. ECCAT also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Psychology sells 5 in-app purchases, starting at $2.99 per 7 days. ECCAT asks for nothing beyond the download.

Psychology ships an update every 3 weeks, ECCAT fortnightly. The most recent releases landed on November 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Psychology | ECCAT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (580 ratings)](https://appshunter.io/ios/app/psychology-body-language/id1161820429/reviews)** | — |
| Number of ratings | **580** | — |
| Positive reviews | 56.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 55 MB | 110 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yurii Kriuchkov](https://appshunter.io/developer/1084215868) | [belal mohamed](https://appshunter.io/developer/6802432255) |

## What reviewers say

### Psychology

[App page](https://appshunter.io/ios/app/psychology-body-language/id1161820429)

Explore the science of human behavior, including body language and microexpressions. Learn to interpret non-verbal cues, understand psychological insights, and test your knowledge with interactive exercises. Enhance your social skills and gain a deeper understanding of people.

**Highlights:** Decoding body language, Master microexpressions, Psychological insights, Interactive quizzes, Real-world application

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly plan | $2.99 | per 7 days |
| Monthly Plan | $4.99 | per month |
| Annual Plan | $14.99 | per year |
| Annual Plan | $14.99 | per year |
| Premium | $2.99 | one-time |

**What reviewers like**

- 📚 Interesting and educational content about body language
- 👍 User-friendly and simple interface design
- 💡 Practical information useful for real-world applications
- 🎯 Comprehensive coverage of body language gestures
- ✨ Well-organized card/memo style presentation

**What reviewers complain about**

- 📺 Excessive ads after every swipe/action
- 💸 Premium version lacks differentiation from free version
- ❌ Inaccurate or contradictory information
- ⚠️ Lacks scientific backing and credible sources
- 🔤 Poor translation quality in some sections

**Reported bugs**

- Video paywall system doesn't work properly
- Text layout issues - explanations cut off on right side
- Incomplete language localization (missing Italian translations)
- Poor translation quality causing comprehension issues
- App optimization issues with newer devices

**Requested features**

- Add more body language gestures and modules
- Include micro-expressions content
- Expand with interactive features (photo emotion recognition)
- Add content on deception from biological perspective
- Include polygraph/lie detection information


### ECCAT

[App page](https://appshunter.io/ios/app/eccat-archive/id6760513403)

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

**In-app purchases:** none


## Frequently asked questions

### Is Psychology free?

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

### Is ECCAT free?

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

### Do Psychology or ECCAT have ads?

Psychology shows ads; ECCAT does not.

### Which is updated more often, Psychology or ECCAT?

Psychology ships an update every 3 weeks, and ECCAT fortnightly. Most recently, Psychology was updated on November 6, 2026 and ECCAT on October 28, 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.*