# Lie / Truth Detector vs Lie Detector

The clearest difference is rating: Lie Detector at 4.4 against Lie / Truth Detector's 4.0. Lie Detector also leads on ratings volume (1.2K vs 291). Lie / Truth Detector's advantage is update cadence (monthly vs every 7 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Lie / Truth Detector sells 3 one-off in-app purchases and Lie Detector sells 8 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Lie Detector holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 291 and 1.2K respectively. Written reviews complicate that: 44% of Lie / Truth Detector's written reviews are positive against 41% of Lie Detector's, so the app with the better star average is not the one people write more warmly about.

Lie / Truth Detector ships an update monthly, Lie Detector every 7 months. The most recent releases landed on September 14, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Lie / Truth Detector | Lie Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (291 ratings)](https://appshunter.io/ios/app/lie-truth-detector-polygraph/id1558500142/reviews) | **[4.4 (1.2K ratings)](https://appshunter.io/ios/app/lie-detector-true-false-test/id1642503184/reviews)** |
| Number of ratings | 291 | **1.2K** |
| Positive reviews | **44.4% of reviews** | 41.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 120 MB | 41 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Luis Hernando Prada](https://appshunter.io/developer/1554735315) | [AppLiks Sp. z O.O.](https://appshunter.io/developer/1804335622) |

## What reviewers say

### 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 |


### 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


## Frequently asked questions

### Is Lie / Truth Detector free?

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

### Is Lie Detector free?

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

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

Lie Detector is rated higher. Lie / Truth Detector averages 4.0 out of 5 from 291 ratings, while Lie Detector averages 4.4 from 1.2K ratings.

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

Both Lie / Truth Detector and Lie Detector show ads.

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

Lie / Truth Detector ships an update monthly, and Lie Detector every 7 months. Most recently, Lie / Truth Detector was updated on September 14, 2026 and Lie Detector on September 25, 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.*