# Ace Lie Detector Polygraph vs AI Lie Detector.

The clearest difference is review sentiment: Ace Lie Detector Polygraph at 37% against AI Lie Detector.'s 0%. Ace Lie Detector Polygraph also leads on iOS requirement (8.0 vs 17.0). AI Lie Detector.'s advantage is in-app purchases (none vs 1) and update cadence (every 2 days vs every 4 weeks). On price, ads and device support there is nothing between them.

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

Ace Lie Detector Polygraph ships an update every 4 weeks, AI Lie Detector. every 2 days. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Ace Lie Detector Polygraph | AI Lie Detector. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (18 ratings)](https://appshunter.io/ios/app/ace-lie-detector-polygraph/id425093062/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | **36.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 15 MB | 12 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tiny Mobile Inc.](https://appshunter.io/developer/360543132) | [GKUER](https://appshunter.io/developer/1623974660) |

## 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


### AI Lie Detector.

[App page](https://appshunter.io/ios/app/ai-lie-detector/id6746071721)

Engage in realistic Q&A sessions where an AI analyzes voice recordings to detect truthfulness. Powered by GPT-4, it evaluates context, logic, tone, and emotion, providing explanations for its judgments. This app is designed for entertainment and fun interactions.

**Highlights:** Voice-based Q&A analysis, AI truth/lie detection, GPT-4 powered analysis, Explanation of judgments, Psychological game for friends, Easy-to-use interface

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

**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 AI Lie Detector. free?

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

### Do Ace Lie Detector Polygraph or AI Lie Detector. have ads?

Neither Ace Lie Detector Polygraph nor AI Lie Detector. shows ads.

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

Ace Lie Detector Polygraph ships an update every 4 weeks, and AI Lie Detector. every 2 days. Most recently, Ace Lie Detector Polygraph was updated on October 15, 2026 and AI Lie Detector. on October 11, 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.*