# Truth and Lie Detector vs Lie / Truth Detector

The clearest difference is rating: Lie / Truth Detector at 4.0 against Truth and Lie Detector's 2.8. Lie / Truth Detector also leads on update cadence (monthly vs every 35 months) and review sentiment (44% vs 30%). Truth and Lie Detector's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Truth and Lie Detector 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 / Truth Detector holds the better App Store score, 4.0 against 2.8. That said, the two scores are not equally well evidenced: Lie / Truth Detector has 306 ratings behind it against 49, so its average is the more settled of the two. Written reviews point the same way: 30% of Truth and Lie Detector's written reviews are positive against 44% of Lie / Truth Detector's.

Truth and Lie Detector ships an update every 35 months, Lie / Truth Detector monthly. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Truth and Lie Detector | Lie / Truth Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (49 ratings)](https://appshunter.io/ios/app/truth-and-lie-detector/id1232853783/reviews) | **[4.0 (306 ratings)](https://appshunter.io/ios/app/lie-truth-detector-polygraph/id1558500142/reviews)** |
| Number of ratings | 49 | **306** |
| Positive reviews | 30.0% of reviews | **44.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 35 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 69 MB | 120 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Abdullah Saleem](https://appshunter.io/developer/1207008098) | [Luis Hernando Prada](https://appshunter.io/developer/1554735315) |

## What reviewers say

### Truth and Lie Detector

[App page](https://appshunter.io/ios/app/truth-and-lie-detector/id1232853783)

This entertainment app simulates a lie detector test to prank your friends. It offers a prank mode to hide instructions and create humorous situations. Remember, it's for fun and doesn't provide actual lie detection.

**Highlights:** Simulated lie detector test, Prank mode, Humorous entertainment, Fake scanner functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |


### 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 Truth and Lie Detector free?

Truth and Lie Detector 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, Truth and Lie Detector or Lie / Truth Detector?

Lie / Truth Detector is rated higher. Truth and Lie Detector averages 2.8 out of 5 from 49 ratings, while Lie / Truth Detector averages 4.0 from 306 ratings.

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

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

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

Truth and Lie Detector ships an update every 35 months, and Lie / Truth Detector monthly. Most recently, Truth and Lie Detector was updated on November 2, 2026 and Lie / Truth Detector on November 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.*