# Lie Detector vs Scouter Σ

The clearest difference is in-app purchases: Scouter Σ at none against Lie Detector's 7. Scouter Σ also leads on update cadence (every 9 days vs monthly). Lie Detector's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.5). On price and ads there is nothing between them.

Both are free to download. Lie Detector sells 7 in-app purchases, starting at $1.99 per 7 days. Scouter Σ asks for nothing beyond the download.

Lie Detector ships an update monthly, Scouter Σ every 9 days. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Lie Detector | Scouter Σ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (1.3K ratings)](https://appshunter.io/ios/app/lie-detector-scanner-game/id1606733866/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 52.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 67 MB | 23 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [WeBrain](https://appshunter.io/developer/1578514377) | [NAOKO UEDA](https://appshunter.io/developer/6794537735) |

## What reviewers say

### Lie Detector

[App page](https://appshunter.io/ios/app/lie-detector-scanner-game/id1606733866)

This is a humorous game that simulates lie detection. Test your friends and family by having them answer questions while the app analyzes their voice or face. You can even rig the results for a good laugh.

**Highlights:** Simulates lie detection, Voice analysis during scan, Face analysis during scan, Rig scan results for pranks, Fun for friends and family

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium subscription | $1.99 | per 7 days |
| Premium subscriptions | $1.99 | per 7 days |
| Premium Subscription | $3.99 | per month |
| Premium subscription | $3.99 | per month |
| Lie Detector Test | $4.99 | per year |
| Premium subscription | $9.99 | per year |
| Premium subscription | $9.99 | per year |

**What reviewers like**

- 👍 Best one
- 👍 Very accurate
- 👍 Good game

**What reviewers complain about**

- 💰 Expensive subscription
- 🤔 Inconsistent results
- ❌ Doesn't work as expected
- 🚫 Scam/not legit

**Reported bugs**

- Incorrect results
- Technical issues with scanners

**Requested features**

- Free access to all features
- Improve accuracy and reliability


### Scouter Σ

[App page](https://appshunter.io/ios/app/scouter/id6795956813)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lie Detector free?

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

### Is Scouter Σ free?

Scouter Σ is free to download, with no in-app purchases.

### Do Lie Detector or Scouter Σ have ads?

Both Lie Detector and Scouter Σ show ads.

### Which is updated more often, Lie Detector or Scouter Σ?

Lie Detector ships an update monthly, and Scouter Σ every 9 days. Most recently, Lie Detector was updated on October 7, 2026 and Scouter Σ on September 30, 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.*