# Lie / Truth Detector vs OViu

The clearest difference is ads: OViu at none against Lie / Truth Detector's shown. Lie / Truth Detector's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Lie / Truth Detector sells 3 one-off in-app purchases and OViu sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Lie / Truth Detector ships an update monthly, OViu every 3 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Lie / Truth Detector | OViu |
| --- | --- | --- |
| 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 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 120 MB | 102 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Luis Hernando Prada](https://appshunter.io/developer/1554735315) | [Adnan Al Rahbi](https://appshunter.io/developer/6783792666) |

## 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 |


### OViu

[App page](https://appshunter.io/ios/app/oviu/id6812665232)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OViu Monthly | $4.99 | per month |
| OViu Yearly | $39.99 | per year |


## Frequently asked questions

### Is Lie / Truth Detector free?

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

### Is OViu free?

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

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

Lie / Truth Detector shows ads; OViu does not.

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

Lie / Truth Detector ships an update monthly, and OViu every 3 weeks. Most recently, Lie / Truth Detector was updated on November 7, 2026 and OViu on October 31, 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.*