# Lie Detector Test vs Liar Catcher Detector

The clearest difference is in-app purchases: Lie Detector Test at none against Liar Catcher Detector's 2. Lie Detector Test also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). Liar Catcher Detector's advantage is update cadence (every 4 months vs every 42 months). On price and ads there is nothing between them.

Both are free to download. Liar Catcher Detector sells 2 in-app purchases, starting at $1.99 per month. Lie Detector Test asks for nothing beyond the download.

Lie Detector Test ships an update every 42 months, Liar Catcher Detector every 4 months. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Lie Detector Test | Liar Catcher Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (1.6K ratings)](https://appshunter.io/ios/app/lie-detector-test-simulator/id1219798065/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 36.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 42 months | **Every 4 months** |
| Monetization | Ad-supported | — |
| Size | 22 MB | 7 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Denis Batishchev](https://appshunter.io/developer/1179896396) | [Maria Bayas](https://appshunter.io/developer/1178999943) |

## 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


### Liar Catcher Detector

[App page](https://appshunter.io/ios/app/liar-catcher-detector/id6758356557)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Year | $14.99 | per year |


## Frequently asked questions

### Is Lie Detector Test free?

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

### Is Liar Catcher Detector free?

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

### Do Lie Detector Test or Liar Catcher Detector have ads?

Both Lie Detector Test and Liar Catcher Detector show ads.

### Which is updated more often, Lie Detector Test or Liar Catcher Detector?

Lie Detector Test ships an update every 42 months, and Liar Catcher Detector every 4 months. Most recently, Lie Detector Test was updated on October 21, 2026 and Liar Catcher Detector on October 14, 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.*