# Lie Detector Truth Test vs Authenticator

The clearest difference is in-app purchases: Authenticator at none against Lie Detector Truth Test's 1. Authenticator also leads on rating (5.0 vs 4.6) and update cadence (every 2 days vs every 3 months). Lie Detector Truth Test's advantage is ratings volume (49K vs 3). On price, ads, device support and iOS requirement there is nothing between them.

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

Authenticator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Lie Detector Truth Test has 49K ratings behind it against 3, so its average is the more settled of the two.

Lie Detector Truth Test ships an update every 3 months, Authenticator every 2 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Lie Detector Truth Test | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (49K ratings)](https://appshunter.io/ios/app/lie-detector-truth-test/id1113503715/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/authenticator-fake-scanner/id6499281052/reviews)** |
| Number of ratings | **49K** | 3 |
| Positive reviews | 51.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 167 MB | 4 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [First Class Media B.V.](https://appshunter.io/developer/1394094946) | [Harden Consulting LLC](https://appshunter.io/developer/366561891) |

## What reviewers say

### Lie Detector Truth Test

[App page](https://appshunter.io/ios/app/lie-detector-truth-test/id1113503715)

Simulate a lie detector test using your device's screen and microphone. Analyze spoken words to determine if they are a truth or a lie, perfect for pranks and entertainment with friends and family.

**Highlights:** Fingerprint and voice scan simulation, Analyzes spoken words for truth/lie, Realistic computer voice, Prank mode, Amazing graphics and sounds, Hilarious fun

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |

**What reviewers like**

- 👍 Accurate lie detection
- 🤩 Fun and engaging
- 💡 Useful for pranking friends

**What reviewers complain about**

- 🐛 Inconsistent results
- 🤬 Too many ads
- 🤔 Questionable privacy concerns

**Reported bugs**

- Crashes on some devices
- Fingerprint scanning issues
- Incorrect results for true statements

**Requested features**

- Reduce ads
- Improve accuracy and consistency
- Add voice detection option


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-fake-scanner/id6499281052)

Simulate biometric authentication for creative projects. This app allows you to choose between palm, retina, or fingerprint scans, or passcode entry. Customize the outcome to always fail, always succeed, or use an override for demonstrations.

**Highlights:** Fake palm scanner, Fake retina scanner, Fake fingerprint scanner, Passcode entry simulation, Customizable authentication outcomes, Override authentication option

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

**In-app purchases:** none


## Frequently asked questions

### Is Lie Detector Truth Test free?

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

### Is Authenticator free?

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

### Which has better reviews, Lie Detector Truth Test or Authenticator?

Authenticator is rated higher. Lie Detector Truth Test averages 4.6 out of 5 from 49K ratings, while Authenticator averages 5.0 from 3 ratings.

### Do Lie Detector Truth Test or Authenticator have ads?

Both Lie Detector Truth Test and Authenticator show ads.

### Which is updated more often, Lie Detector Truth Test or Authenticator?

Lie Detector Truth Test ships an update every 3 months, and Authenticator every 2 days. Most recently, Lie Detector Truth Test was updated on October 26, 2026 and Authenticator on October 24, 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.*