# Lie Detector Truth Test vs Lie / Truth Detector

The clearest difference is rating: Lie Detector Truth Test at 4.6 against Lie / Truth Detector's 4.0. Lie Detector Truth Test also leads on ratings volume (49K vs 306). Lie / Truth Detector's advantage is update cadence (monthly vs every 3 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Lie Detector Truth Test sells 1 one-off in-app purchase and Lie / Truth Detector sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Lie Detector Truth Test holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: Lie Detector Truth Test has 49K ratings behind it against 306, so its average is the more settled of the two. Written reviews point the same way: 51% of Lie Detector Truth Test's written reviews are positive against 44% of Lie / Truth Detector's.

Lie Detector Truth Test ships an update every 3 months, Lie / Truth Detector monthly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Lie Detector Truth Test | Lie / Truth Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (49K ratings)](https://appshunter.io/ios/app/lie-detector-truth-test/id1113503715/reviews)** | [4.0 (306 ratings)](https://appshunter.io/ios/app/lie-truth-detector-polygraph/id1558500142/reviews) |
| Number of ratings | **49K** | 306 |
| Positive reviews | **51.1% of reviews** | 44.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 167 MB | 120 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) | [Luis Hernando Prada](https://appshunter.io/developer/1554735315) |

## 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


### Lie / Truth Detector

[App page](https://appshunter.io/ios/app/lie-truth-detector-polygraph/id1558500142)

Simulate a lie or truth detector with this fun app. Analyze what your friends and family say and see if the simulated polygraph detects truth or lies. Features fantastic graphics and effects for hours of entertainment.

**Highlights:** Simulates lie/truth detection, Polygraph simulation, Fantastic graphics, Engaging effects, Hours of fun

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove the ads | $2.99 | one-time |
| AI Detector | $3.99 | one-time |
| All features + no ads | $5.99 | one-time |


## Frequently asked questions

### Is Lie Detector Truth Test free?

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

### Is Lie / Truth Detector free?

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

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

Lie Detector Truth Test is rated higher. Lie Detector Truth Test averages 4.6 out of 5 from 49K ratings, while Lie / Truth Detector averages 4.0 from 306 ratings.

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

Both Lie Detector Truth Test and Lie / Truth Detector show ads.

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

Lie Detector Truth Test ships an update every 3 months, and Lie / Truth Detector monthly. Most recently, Lie Detector Truth Test was updated on October 30, 2026 and Lie / Truth Detector 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.*