# Lie / Truth Detector vs Countdown

The clearest difference is in-app purchases: Countdown at none against Lie / Truth Detector's 3. Countdown also leads on ads (none vs shown). On price, 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. Countdown asks for nothing beyond the download.

## The numbers

| Metric | Lie / Truth Detector | Countdown |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (291 ratings)](https://appshunter.io/ios/app/lie-truth-detector-polygraph/id1558500142/reviews)** | — |
| Number of ratings | **291** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 120 MB | 33 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Luis Hernando Prada](https://appshunter.io/developer/1554735315) | [Murat Sancak](https://appshunter.io/developer/6777413511) |

## 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 |


### Countdown

[App page](https://appshunter.io/ios/app/countdown-death-timer/id6797364187)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lie / Truth Detector free?

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

### Is Countdown free?

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

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

Lie / Truth Detector shows ads; Countdown does not.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*