Lie Detector - Face Scanner

LIE DETECTOR - FACE AND VOICE TRUTH ANALYZER

Think you can spot a liar? Lie Detector uses your phone camera and microphone to analyze facial expressions and voice stress in real time. Ask a question, let someone answer, and watch the AI deliver its verdict. Designed for parties, family gatherings, and social fun.

HOW IT WORKS

The face analysis engine tracks eye movement, blink rate, head movement, gaze direction, and smile authenticity. The voice stress analyzer measures volume variation, hesitation patterns, and vocal trembling. Together they produce a combined score from 0 to 100 and a verdict ranging from Definitely Truth to Definitely Lying. Everything runs entirely on your device. No data is ever uploaded.

MULTIPLAYER MODE

One player asks a question using built-in voice recognition. The question appears on screen. The second player answers while the camera and microphone scan simultaneously. Five seconds of analysis produces an instant verdict with face score, voice score, and combined result. Three questions per session with a full summary at the end.

SOLO MODE

Play alone and challenge yourself. Choose from seven question categories and let the phone ask questions using text-to-speech in your device language. Answer out loud and see if you can fool the AI.

QUESTION CATEGORIES

Food and Drink, Relationships, Work and School, Fun and Games, Money, Daring, Random Mix. Each category contains carefully written questions designed to produce genuine reactions and entertaining moments.

KEY FEATURES

Real-time facial expression analysis using on-device machine learning.
Voice stress detection through amplitude and pattern analysis.
Speech recognition for spoken questions in multiple languages.
Automatic glasses detection with accuracy warning.
Session history with full per-question breakdown saved locally.
Solo mode with text-to-speech in your device language.
Ad-free option available as a one-time permanent purchase.
No account or registration required.

PRIVACY

All face and voice analysis runs locally on your device using on-device machine learning. No biometric data, video, or audio is ever transmitted. Session history is stored privately on your device and can be deleted anytime from Settings. The free version shows ads via Google AdMob using only the standard advertising identifier.

DISCLAIMER

Lie Detector is for entertainment only. It is not a scientifically validated polygraph or deception detection tool. Results have no scientific basis and must never be used to make real accusations, as evidence in any dispute, or to justify decisions affecting another person. The scoring includes intentional random elements to keep the experience fun and unpredictable. By using this app you confirm your use is purely for personal entertainment among consenting adults. The developer accepts no liability for misuse or reliance on results for any non-entertainment purpose.