# Lie Detector vs Roach Attack

The clearest difference is in-app purchases: Roach Attack at none against Lie Detector's 3. Roach Attack also leads on update cadence (every 3 weeks vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lie Detector sells 3 in-app purchases, starting at $7.99 per 7 days. Roach Attack asks for nothing beyond the download.

Lie Detector ships an update every 6 weeks, Roach Attack every 3 weeks. The most recent releases landed on September 29, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Lie Detector | Roach Attack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (29 ratings)](https://appshunter.io/ios/app/lie-detector-use-voice-test/id6747712962/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 14 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alena Kislova](https://appshunter.io/developer/1869426091) | [Sunil Targe](https://appshunter.io/developer/1722898970) |

## What reviewers say

### Lie Detector

[App page](https://appshunter.io/ios/app/lie-detector-use-voice-test/id6747712962)

This app simulates a lie detection test using fingerprint scanning and voice analysis to determine if someone is telling the truth or lying. It's designed for entertainment, offering a fun way to challenge friends or spice up game nights with instant results and realistic effects.

**Highlights:** Fingerprint scanning lie detection, Voice analysis simulation, Instant truth/lie results, Realistic animations and sound effects, Manual outcome control, No sign-up required

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Week subscription | $7.99 | per 7 days |
| Premium | $7.99 | per 7 days |
| Premium | $49.99 | per year |


### Roach Attack

[App page](https://appshunter.io/ios/app/roach-attack-meme-video-maker/id6777873315)

**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 Roach Attack free?

Roach Attack is free to download, with no in-app purchases.

### Do Lie Detector or Roach Attack have ads?

Neither Lie Detector nor Roach Attack shows ads.

### Which is updated more often, Lie Detector or Roach Attack?

Lie Detector ships an update every 6 weeks, and Roach Attack every 3 weeks. Most recently, Lie Detector was updated on September 29, 2026 and Roach Attack on September 27, 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.*