# Lie Detector Test vs Prank Luck Scanner

The clearest difference is rating: Lie Detector Test at 3.4 against Prank Luck Scanner's 1.0. Lie Detector Test also leads on in-app purchases (none vs 1) and ratings volume (1.6K vs 1). Prank Luck Scanner's advantage is update cadence (every 21 months vs every 42 months). On price, ads and device support there is nothing between them.

Both are free to download. Prank Luck Scanner sells 1 one-off in-app purchase. Lie Detector Test asks for nothing beyond the download.

Lie Detector Test holds the better App Store score, 3.4 against 1.0. That said, the two scores are not equally well evidenced: Lie Detector Test has 1.6K ratings behind it against 1, so its average is the more settled of the two.

Lie Detector Test ships an update every 42 months, Prank Luck Scanner every 21 months. Both last shipped on October 16, 2026.

## The numbers

| Metric | Lie Detector Test | Prank Luck Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (1.6K ratings)](https://appshunter.io/ios/app/lie-detector-test-simulator/id1219798065/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/prank-luck-scanner/id1243789561/reviews) |
| Number of ratings | **1.6K** | 1 |
| Positive reviews | 36.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 42 months | **Every 21 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 22 MB | 16 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Denis Batishchev](https://appshunter.io/developer/1179896396) | [Brandon Stecklein](https://appshunter.io/developer/498894252) |

## What reviewers say

### 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


### Prank Luck Scanner

[App page](https://appshunter.io/ios/app/prank-luck-scanner/id1243789561)

This novelty app simulates a fingerprint scan to provide a random horoscope. It's designed for entertainment and pranks, offering customization for scan speed, custom responses, and themes.

**Highlights:** Simulated fingerprint scan, Random horoscope generation, Customizable scan speed, Set custom responses, Multiple themes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Luck Scanner Premium | $0.99 | one-time |


## Frequently asked questions

### Is Lie Detector Test free?

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

### Is Prank Luck Scanner free?

Prank Luck Scanner is free to download, with in-app purchases available.

### Which has better reviews, Lie Detector Test or Prank Luck Scanner?

Lie Detector Test is rated higher. Lie Detector Test averages 3.4 out of 5 from 1.6K ratings, while Prank Luck Scanner averages 1.0 from 1 ratings.

### Do Lie Detector Test or Prank Luck Scanner have ads?

Both Lie Detector Test and Prank Luck Scanner show ads.

### Which is updated more often, Lie Detector Test or Prank Luck Scanner?

Lie Detector Test ships an update every 42 months, and Prank Luck Scanner every 21 months. Most recently, Lie Detector Test was updated on October 16, 2026 and Prank Luck Scanner on October 16, 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.*