LieQ - Real Lie Detector
Real Heartbeat Lie Detection
Free · Designed for iPad. Not verified for macOS.
Real PPG Lie Detector — Analyze heart rate changes in real-time
LieQ is the world's first lie detector app that uses real PPG (photoplethysmography) heart rate measurement. Place your finger on the rear camera, ask a question, and watch the heartbeat change in real-time.
▸ HOW IT WORKS
Your body reacts when you lie. Heart rate increases, HRV changes — LieQ catches these micro-changes through 4 steps:
01. Flash illuminates your fingertip
02. Camera reads blood flow changes
03. Lying → Sympathetic nervous system activation
04. HRV fluctuation is detected and scored
▸ REAL MEASUREMENT, NOT FAKE
• Real-time PPG waveform display
• RMSSD / SDNN / HR weighted HRV scoring
• Based on Scientific Reports 2024 methodology
• Patent Pending — 3 patents filed
▸ 97+ QUESTIONS
• 40 General questions — fun party questions
• 57 Adult questions — couples & party mode
• Write your own custom questions
• Random pick button for each category
▸ IMPORTANT NOTE
LieQ is an entertainment app. For ages 16+.
Patent Pending · Based on Scientific Reports 2024
Ratings & Reviews
Bug fixes and performance improvements
The developer, Heuk Kim, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Heuk Kim
- Size
- 64.1 MB
- Category
- Entertainment
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Frequent
Mature or Suggestive Themes
Infrequent
Profanity or Crude Humor
Contains
Advertising
- Copyright
- © 2026 Hailo