# Lie Detector vs Lie detector

The clearest difference is rating: Lie detector at 4.0 against Lie Detector's 2.7. Lie detector also leads on review sentiment (50% vs 14%) and in-app purchases (none vs 4). Lie Detector's advantage is ratings volume (30 vs 5). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Lie Detector sells 4 one-off in-app purchases. Lie detector asks for nothing beyond the download.

Lie detector holds the better App Store score, 4.0 against 2.7. That said, the two scores are not equally well evidenced: Lie Detector has 30 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 14% of Lie Detector's written reviews are positive against 50% of Lie detector's.

Lie Detector ships an update every 8 months, Lie detector weekly. The most recent releases landed on September 11, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Lie Detector | Lie detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (30 ratings)](https://appshunter.io/ios/app/lie-detector-truth-test-scan/id807454884/reviews) | **[4.0 (5 ratings)](https://appshunter.io/ios/app/lie-detector-test/id6445990039/reviews)** |
| Number of ratings | **30** | 5 |
| Positive reviews | 13.8% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 88 MB | 3 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iDevver Apps Limited](https://appshunter.io/developer/453983205) | [Warlock Arts](https://appshunter.io/developer/696755058) |

## What reviewers say

### Lie Detector

[App page](https://appshunter.io/ios/app/lie-detector-truth-test-scan/id807454884)

This app simulates lie detection using fingerprint, voice, and camera scanning for entertainment purposes. It's designed for pranks and novelty, offering a fun way to playfully question truthfulness.

**Highlights:** Fingerprint scanner simulation, Voice scanner simulation, Camera scanner simulation, Entertainment and novelty purposes, Prank functionality

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Fingerprint Analysis Mode | $0.99 | one-time |
| Unlock Camera Analysis Mode | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Ultimate Spy Pack | $2.99 | one-time |


### Lie detector

[App page](https://appshunter.io/ios/app/lie-detector-test/id6445990039)

This app simulates a lie detector by scanning a fingerprint to determine if someone is telling the truth or lying. It measures pulse variations to provide a "mind reading" result, intended for entertainment and pranks.

**Highlights:** Fingerprint scanning lie detection simulation, Pulse variation analysis, Simulates a polygraph test, Prank friends and family, Entertainment purposes only

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

**In-app purchases:** none


## Frequently asked questions

### Is Lie Detector free?

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

### Is Lie detector free?

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

### Which has better reviews, Lie Detector or Lie detector?

Lie detector is rated higher. Lie Detector averages 2.7 out of 5 from 30 ratings, while Lie detector averages 4.0 from 5 ratings.

### Do Lie Detector or Lie detector have ads?

Lie Detector shows ads; Lie detector does not.

### Which is updated more often, Lie Detector or Lie detector?

Lie Detector ships an update every 8 months, and Lie detector weekly. Most recently, Lie Detector was updated on September 11, 2026 and Lie detector on September 7, 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.*