# Lie Detector vs Authenticator

The clearest difference is rating: Authenticator at 5.0 against Lie Detector's 4.4. Authenticator also leads on in-app purchases (none vs 8) and update cadence (every 2 days vs every 7 months). Lie Detector's advantage is ratings volume (1.2K vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lie Detector sells 8 in-app purchases, starting at $0.99 per 7 days. Authenticator asks for nothing beyond the download.

Authenticator holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Lie Detector has 1.2K ratings behind it against 2, so its average is the more settled of the two.

Lie Detector ships an update every 7 months, Authenticator every 2 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Lie Detector | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (1.2K ratings)](https://appshunter.io/ios/app/lie-detector-true-false-test/id1642503184/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/authenticator-fake-scanner/id6499281052/reviews)** |
| Number of ratings | **1.2K** | 2 |
| Positive reviews | 41.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 7 months | **Every 2 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 41 MB | 4 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) | [Harden Consulting LLC](https://appshunter.io/developer/366561891) |

## What reviewers say

### Lie Detector

[App page](https://appshunter.io/ios/app/lie-detector-true-false-test/id1642503184)

This app simulates lie detection using fingerprint and voice scanning for entertainment. It's designed for playful interactions with friends and family, allowing you to share facts and see if they're true or false. Customize results for added fun.

**Highlights:** Fingerprint scanning simulation, Voice analysis simulation, Face scanning simulation, Customizable scan results, Entertainment for friends and family

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $0.99 | per 7 days |
| Lie Detector Premium Pack | $1.99 | per 7 days |
| Weekly Access | $1.99 | per 7 days |
| Monthly Access | $2.99 | per month |
| Yearly Access | $2.99 | per year |
| Lie Detector Test Pro | $2.99 | per month |
| Yearly Access | $5.99 | per year |
| Lie Detector Premium | $5.99 | per year |

**What reviewers like**

- 🤩 Fun and entertaining
- 👍 Engaging gameplay
- 😄 Brings laughter to gatherings

**What reviewers complain about**

- 🔒 Locked features behind paywall
- 🐛 Inconsistent performance
- 🤔 Questionable accuracy of lie detection

**Reported bugs**

- App crashes after a few uses
- Fingerprint scanner not working properly
- Subscription issues and inability to cancel

**Requested features**

- Unlock all features for free
- Improve lie detection algorithm
- Add more question types and scenarios


### 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 free?

Lie Detector 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 or Authenticator?

Authenticator is rated higher. Lie Detector averages 4.4 out of 5 from 1.2K ratings, while Authenticator averages 5.0 from 2 ratings.

### Do Lie Detector or Authenticator have ads?

Both Lie Detector and Authenticator show ads.

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

Lie Detector ships an update every 7 months, and Authenticator every 2 days. Most recently, Lie Detector was updated on October 16, 2026 and Authenticator on October 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.*