# Simulator X vs Lie Detector Test

The clearest difference is rating: Lie Detector Test at 3.4 against Simulator X's 2.5. Lie Detector Test also leads on ratings volume (1.6K vs 18) and review sentiment (36% vs 25%). Simulator X's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Lie Detector Test holds the better App Store score, 3.4 against 2.5. That said, the two scores are not equally well evidenced: Lie Detector Test has 1.6K ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 25% of Simulator X's written reviews are positive against 36% of Lie Detector Test's.

Simulator X ships an update every 20 months, Lie Detector Test every 42 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Simulator X | Lie Detector Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (18 ratings)](https://appshunter.io/ios/app/simulator-x-ray-scanner-chest/id990527228/reviews) | **[3.4 (1.6K ratings)](https://appshunter.io/ios/app/lie-detector-test-simulator/id1219798065/reviews)** |
| Number of ratings | 18 | **1.6K** |
| Positive reviews | 25.0% of reviews | **36.5% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 20 months** | Every 42 months |
| Monetization | **Free** | Ad-supported |
| Size | 52 MB | 22 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Denis Ivanov](https://appshunter.io/developer/874250666) | [Denis Batishchev](https://appshunter.io/developer/1179896396) |

## What reviewers say

### Simulator X

[App page](https://appshunter.io/ios/app/simulator-x-ray-scanner-chest/id990527228)

This entertainment app simulates an X-ray of the chest for humorous purposes. It's a joke application designed to prank friends and family, providing random results safely. It is not a real scanner and does not emit radiation.

**Highlights:** Chest X-ray simulation, Joke and prank functionality, Safe and harmless, Random result generation, Entertainment purposes only

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

**In-app purchases:** none


### Lie Detector Test

[App page](https://appshunter.io/ios/app/lie-detector-test-simulator/id1219798065)

Simulate a lie detector test using your fingerprint. Fool your friends with this fun prank app that analyzes a "scan" of their finger to determine if they are telling the truth or lying. Perfect for lighthearted entertainment.

**Highlights:** Fingerprint scanner simulation, Prank mode to fool friends, Fake lie/truth results, Laser Xray effect, Random result generation

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Fun to prank friends
- 😯 Surprisingly accurate at times
- 🤩 Amazing programming

**What reviewers complain about**

- 🐛 Inconsistent results
- 💩 Completely fake/inaccurate
- 🤬 Too many ads
- 😡 Always says 'true'

**Reported bugs**

- Incorrectly identifies true statements as lies
- Freezes after each use

**Requested features**

- More realistic lie detection
- Option to change language


## Frequently asked questions

### Is Simulator X free?

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

### Is Lie Detector Test free?

Lie Detector Test is free to download, with no in-app purchases.

### Which has better reviews, Simulator X or Lie Detector Test?

Lie Detector Test is rated higher. Simulator X averages 2.5 out of 5 from 18 ratings, while Lie Detector Test averages 3.4 from 1.6K ratings.

### Do Simulator X or Lie Detector Test have ads?

Lie Detector Test shows ads; Simulator X does not.

### Which is updated more often, Simulator X or Lie Detector Test?

Simulator X ships an update every 20 months, and Lie Detector Test every 42 months. Most recently, Simulator X was updated on October 24, 2026 and Lie Detector Test on October 21, 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.*