# Ace Lie Detector Polygraph vs Lie Finder

The clearest difference is rating: Ace Lie Detector Polygraph at 3.1 against Lie Finder's 2.6. Ace Lie Detector Polygraph also leads on ratings volume (18 vs 5) and iOS requirement (8.0 vs 16.6). Lie Finder's advantage is in-app purchases (none vs 1). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Ace Lie Detector Polygraph sells 1 one-off in-app purchase. Lie Finder asks for nothing beyond the download.

Ace Lie Detector Polygraph holds the better App Store score, 3.1 against 2.6. Both are backed by a comparable volume of ratings — 18 and 5 respectively. Written reviews complicate that: 37% of Ace Lie Detector Polygraph's written reviews are positive against 43% of Lie Finder's, so the app with the better star average is not the one people write more warmly about.

Ace Lie Detector Polygraph ships an update every 4 weeks, Lie Finder every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Ace Lie Detector Polygraph | Lie Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (18 ratings)](https://appshunter.io/ios/app/ace-lie-detector-polygraph/id425093062/reviews)** | [2.6 (5 ratings)](https://appshunter.io/ios/app/lie-finder/id1459593709/reviews) |
| Number of ratings | **18** | 5 |
| Positive reviews | 36.9% of reviews | **42.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 15 MB | 119 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tiny Mobile Inc.](https://appshunter.io/developer/360543132) | [AndEtc, Inc.](https://appshunter.io/developer/1311918485) |

## What reviewers say

### Ace Lie Detector Polygraph

[App page](https://appshunter.io/ios/app/ace-lie-detector-polygraph/id425093062)

This entertainment app simulates a lie detector for fun. Use its visual technology to "detect" truths from friends and family. Upgrade to manipulate results for jokes.

**Highlights:** Simulated lie detection, TruthWave™ visual technology, Live data display, Result manipulation for jokes, Impress and intimidate friends

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lie Detector Upgrade - Lie Detection special | $0.99 | one-time |

**What reviewers like**

- 🚀 Straight awesomeness
- 👍 Funny and entertaining
- 🤖 Surprisingly accurate at times

**What reviewers complain about**

- 🐛 Inconsistent results
- 💤 Boring and not very useful
- 🤷‍♀️ Doesn't actually work as a lie detector

**Reported bugs**

- App loads upside down on some devices
- Upgrade doesn't work as expected

**Requested features**

- Ability to record audio for more accurate detection
- Option to customize the detection logic


### Lie Finder

[App page](https://appshunter.io/ios/app/lie-finder/id1459593709)

This entertainment app claims to detect lies by analyzing voice audio. It processes sound frequencies to differentiate between truthful and deceptive speech, offering a fun way to uncover the truth in everyday situations. Use it to test friends, family, or even pets for amusement.

**Highlights:** Voice audio analysis, Pseudo-Dynamic Wave Interpretation, Lie detection, Fun for friends and family, Real-time feedback

**In-app purchases:** none


## Frequently asked questions

### Is Ace Lie Detector Polygraph free?

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

### Is Lie Finder free?

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

### Which has better reviews, Ace Lie Detector Polygraph or Lie Finder?

Ace Lie Detector Polygraph is rated higher. Ace Lie Detector Polygraph averages 3.1 out of 5 from 18 ratings, while Lie Finder averages 2.6 from 5 ratings.

### Do Ace Lie Detector Polygraph or Lie Finder have ads?

Neither Ace Lie Detector Polygraph nor Lie Finder shows ads.

### Which is updated more often, Ace Lie Detector Polygraph or Lie Finder?

Ace Lie Detector Polygraph ships an update every 4 weeks, and Lie Finder every 2 months. Most recently, Ace Lie Detector Polygraph was updated on November 1, 2026 and Lie Finder on November 3, 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.*