# Lie Detector Test ‎ vs Polygraph AI

The clearest difference is ads: Lie Detector Test ‎ at none against Polygraph AI's shown. Polygraph AI's advantage is update cadence (every 2 days vs every 3 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Lie Detector Test ‎ ships an update every 3 months, Polygraph AI every 2 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Lie Detector Test ‎ | Polygraph AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (41 ratings)](https://appshunter.io/ios/app/lie-detector-test/id6745645704/reviews)** | — |
| Number of ratings | **41** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 21 MB | 31 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zaffles](https://appshunter.io/developer/1078438438) | [Andres Saiz Ruiperez](https://appshunter.io/developer/6781788677) |

## What reviewers say

### Lie Detector Test ‎

[App page](https://appshunter.io/ios/app/lie-detector-test/id6745645704)

This app provides a fake fingerprint scanner to simulate a lie detector. It's designed for entertainment, perfect for parties and game nights to create humorous situations and encourage laughter.

**Highlights:** Fake fingerprint scan animation, Sci-fi sound effects, Dramatic analyzing effects, Three fake results: Truth, Lie, Unclear, Great for games and party dares, Silly and addictive gameplay

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

**In-app purchases:** none


### Polygraph AI

[App page](https://appshunter.io/ios/app/polygraph-ai-lie-analysis/id6796011746)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lie Detector Test ‎ free?

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

### Is Polygraph AI free?

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

### Do Lie Detector Test ‎ or Polygraph AI have ads?

Polygraph AI shows ads; Lie Detector Test ‎ does not.

### Which is updated more often, Lie Detector Test ‎ or Polygraph AI?

Lie Detector Test ‎ ships an update every 3 months, and Polygraph AI every 2 days. Most recently, Lie Detector Test ‎ was updated on November 8, 2026 and Polygraph AI on November 6, 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.*