# Lie / Truth Detector vs Brain Camp

The clearest difference is ads: Brain Camp at none against Lie / Truth Detector's shown. Brain Camp also leads on update cadence (every 3 days vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Lie / Truth Detector sells 3 one-off in-app purchases and Brain Camp sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

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

## The numbers

| Metric | Lie / Truth Detector | Brain Camp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (306 ratings)](https://appshunter.io/ios/app/lie-truth-detector-polygraph/id1558500142/reviews)** | — |
| Number of ratings | **306** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 120 MB | 87 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Luis Hernando Prada](https://appshunter.io/developer/1554735315) | [Colin Rafter](https://appshunter.io/developer/1552926214) |

## 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 |


### Brain Camp

[App page](https://appshunter.io/ios/app/brain-camp/id6502373391)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access Brain Camp - Monthly | $0.99 | per month |
| Access Brain Camp - Yearly | $3.99 | per year |


## Frequently asked questions

### Is Lie / Truth Detector free?

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

### Is Brain Camp free?

Brain Camp is free to download, with in-app purchases available.

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

Lie / Truth Detector shows ads; Brain Camp does not.

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

Lie / Truth Detector ships an update monthly, and Brain Camp every 3 days. Most recently, Lie / Truth Detector was updated on October 24, 2026 and Brain Camp on October 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.*