SusAI is the AI lie detector app for iPhone. It analyzes micro-expressions, vocal stress, and body language in real time. Ask a question. Get a truth score.
For entertainment and curiosity purposes. Not a scientifically validated lie detector.
Type or speak any question, point the camera, and let them answer. SusAI captures every frame of video and audio.
In seconds, a single number and a clear verdict — Truthful, Suspicious, or Deceptive — distilled from every behavioral signal.
Eye movement, micro-expressions, vocal stress, speech and body language — each scored and explained, frame by frame.
Powered by AI behavioral psychology research, SusAI breaks down every micro-signal into a clear, scored analysis.
Detects gaze aversion, rapid blinking, pupil dilation shifts, and eye-accessing cues associated with cognitive load.
Identifies fleeting facial expressions that last fractions of a second, revealing concealed emotions using FACS methodology.
Analyzes pitch variations, speech rate changes, vocal tremors, and hesitation patterns that indicate psychological stress.
Evaluates verbal consistency, narrative structure, qualifier usage, and response latency for signs of fabrication.
Monitors posture shifts, self-soothing gestures, defensive positioning, and fidgeting behaviors during responses.
Get beautifully designed result cards with full breakdowns you can save and share with friends.
From question to verdict in under 30 seconds. SusAI handles the complexity so you don't have to.
Type or pick a question you want answered honestly.
The app captures video and audio as they answer.
Micro-expressions, vocal stress, speech, and body language are scored.
A truth score and detailed breakdown reveal what the signals show.
Every scan generates a comprehensive analysis across five behavioral dimensions, each independently scored and explained.
High consistency across all behavioral channels. Minimal stress markers detected.
Mixed signals detected. Some behavioral channels show elevated stress indicators.
Multiple deception markers present. Significant inconsistencies across channels.
What SusAI is, what it isn't, and what it costs — no fine print.
No — and no app or device is. Not even the polygraph is a scientifically validated lie detector. SusAI is built for entertainment and curiosity: it uses AI to read the same behavioral signals human experts study — micro-expressions, vocal stress, body language — and turns them into a truth score. Its verdicts should never be used as evidence or to make serious decisions about anyone.
Ask a question and record the answer on your iPhone. SusAI's AI analyzes the video and audio across five behavioral channels — eye movement, micro-expressions, vocal stress, speech patterns and body language — scores each one, and combines them into a single verdict: Truthful, Suspicious or Deceptive.
Behavioral signals like gaze aversion or vocal tremor correlate with stress — not necessarily with lying. SusAI makes no accuracy guarantee and is not a substitute for judgment. Treat every verdict as a conversation starter, not proof.
SusAI is free to download and your first scan is free. SusAI Pro is $4.99 per week or $14.99 per month and unlocks unlimited scans, the full five-signal behavioral breakdown for every scan, and HD shareable verdict cards.
No app can prove someone is lying. What SusAI does is make the invisible visible: it spots fleeting micro-expressions, stress in the voice, and shifts in body language that most people miss, and scores them in seconds. It's the fun way to put a hunch to the test — for curiosity, not court.
SusAI is currently an iPhone app, available on the Apple App Store. An Android version isn't available yet.
Download SusAI free — your first scan is on us. Pro unlocks unlimited scans, full breakdowns, and HD share cards.
Download on App Store