# Truth and Lie Detector vs Lie Detector

The clearest difference is rating: Lie Detector at 5.0 against Truth and Lie Detector's 2.3. Lie Detector also leads on ads (none vs shown) and update cadence (every 2 months vs every 18 months). Truth and Lie Detector's advantage is in-app purchases (none vs 1) and ratings volume (71 vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Lie Detector sells 1 in-app purchase, starting at $2.99 per 7 days. Truth and Lie Detector asks for nothing beyond the download.

Lie Detector holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: Truth and Lie Detector has 71 ratings behind it against 1, so its average is the more settled of the two.

Truth and Lie Detector ships an update every 18 months, Lie Detector every 2 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Truth and Lie Detector | Lie Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (71 ratings)](https://appshunter.io/ios/app/truth-and-lie-detector/id1198024414/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lie-detector-polygraph-scanner/id6443803230/reviews)** |
| Number of ratings | **71** | 1 |
| Positive reviews | 27.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 10 MB | 14 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fahad Manzoor](https://appshunter.io/developer/1144176876) | [Mark Hughes](https://appshunter.io/developer/1595054605) |

## What reviewers say

### Truth and Lie Detector

[App page](https://appshunter.io/ios/app/truth-and-lie-detector/id1198024414)

This entertainment app allows you to prank friends and family by simulating a lie detector test. It's designed for humorous interactions and does not offer real lie detection capabilities.

**Highlights:** Simulated lie detector test, Prank mode, Humorous interactions, Fake truth detection

**In-app purchases:** none


### Lie Detector

[App page](https://appshunter.io/ios/app/lie-detector-polygraph-scanner/id6443803230)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lie detector | $2.99 | per 7 days |


## Frequently asked questions

### Is Truth and Lie Detector free?

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

### Is Lie Detector free?

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

### Which has better reviews, Truth and Lie Detector or Lie Detector?

Lie Detector is rated higher. Truth and Lie Detector averages 2.3 out of 5 from 71 ratings, while Lie Detector averages 5.0 from 1 ratings.

### Do Truth and Lie Detector or Lie Detector have ads?

Truth and Lie Detector shows ads; Lie Detector does not.

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

Truth and Lie Detector ships an update every 18 months, and Lie Detector every 2 months. Most recently, Truth and Lie Detector was updated on October 23, 2026 and Lie Detector on October 27, 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.*