Fibster vs Truth Scan Biometric Polygraph
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fibster
This app simulates a lie detector test using your phone's camera to analyze heart rate data. It's designed for entertainment, offering a quick, engaging experience to explore physiological reactions to questions.
- Heart rate analysis via camera
- Simulated polygraph test
- Question creation guide
- Quick 80-second tests
- Entertainment focused
- iCloud authentication
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Discover Fibster, the most advanced lie detector test app ever created. A leap beyond other lie detector test apps, utilizing the participant's real physiological (heart rate) data. As questions are asked and answered, Fibster analyzes real-time reactions, subtle changes in the intervals between heartbeats, to determine test results. Ideal for lively game nights or a playful peek into what a polygraph test feels like. Based on scientific principles used in professional polygraph practice, Fibster simplifies complex lie detection into an engaging user experience. With just four questions—two baseline, two relevant—dive into a quick, 80-second truth-seeking adventure. The app guides you on creating effective questions in the FAQs, enhancing your Fibster experience. FAQs are accessed by tapping the icon (?) on the top right of the Home Screen. How it works: Fibster uses technology that turns your camera/flash into a photoplethysmogram (PPG), which is what many wearable devices use to measure pulse. This app goes further than simply measuring pulse, beats per minute (BPM); it analyzes the micro time intervals between heartbeats, which is a key indicator for stress. Then by comparing the changes in stress levels between irrelevant and relevant questions, using our scoring algorithm, it determines test results. The following is a guide to using the app: - Enable iCloud Authentication. - Tap the logo (button) to begin. - Agree to the acknowledgement. - Create two relevant questions, tap next. - Create two irrelevant questions, tap save. - Instructions on question creation are in the FAQs (“?”) section of the app, icon on the top right of the Home Screen. - Review questions, tap start test. - Calibrating message pops up on screen; participant places finger over camera/flash to begin acquiring heart rate data. - Go through all eight test questions. Each question is designed to be at least 10 seconds in order to analyze the required information. - After all questions are completed, the result screen displays the outcome of the test. Attention: - This app is not 100% accurate. - Do not make important decisions based on this app. - Do not force people to use this app (take tests). Disclaimer: This app is designed for entertainment purposes only and is not a substitute for professional polygraph examinations conducted by seasoned examiners with sophisticated instruments. Fibster is not an accredited/recognized polygraph or lie detection device. Heart rate data analyzed during tests is never saved or stored. By downloading and using this app, you agree to the Privacy Policy and Terms of Service: Privacy Policy: https://app.termly.io/document/privacy-policy/42bed339-306e-4d61-b5f3-38364946dd52 Terms of Service: https://app.termly.io/document/terms-of-service/a9202476-3c03-4f35-9764-95dad02fa842
Truth Scan Biometric Polygraph
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Truth Scan is the most advanced biometric polygraph test available on iPhone. Using your camera, microphone, and Apple Watch, Truth Scan measures real physiological signals — heart rate, voice stress, and behavioral patterns — to detect deception with cutting-edge AI analysis. FEATURES: • Camera-based heart rate monitoring via fingertip PPG • Real-time voice stress and behavioral analysis • Remote sessions — test anyone, anywhere in the world • Live Apple Watch heart rate streaming • AI-powered session analysis with deep behavioral insights • Full session report with AI summary HOW IT WORKS: Start a test, answer the baseline questions, then let Truth Scan analyze the biometric data in real time. Share a 6-digit code for remote sessions and monitor someone else's responses live. For entertainment purposes only. Privacy Policy: https://glowinmedia.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Fibster at every 6 days against Truth Scan Biometric Polygraph's every 6 weeks. Fibster also leads on chart position (#158 vs unranked). Truth Scan Biometric Polygraph's advantage is price ($0.99 vs $6.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Fibster costs $6.99 and Truth Scan Biometric Polygraph $0.99 up front. Fibster sells 3 in-app purchases, starting at $0.99 per month and Truth Scan Biometric Polygraph sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Fibster ships an update every 6 days, Truth Scan Biometric Polygraph every 6 weeks. The most recent releases landed on October 19, 2026 and October 12, 2026 respectively.
| Parameter | Fibster | Truth Scan Biometric Polygraph |
|---|---|---|
| Price | $6.99 | $0.99 — better |
| Rating | 2.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | — |
| Best chart rank | #158 — better | — |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 8 MB |
| Age rating | 4+ | 17+ |
| Developer | Drew Smith | Thomas Adler |
In-app purchases
Fibster
- Monthly$0.991 Month
- Annual$7.991 Year
- LifetimeFree
Truth Scan Biometric Polygraph
- Truth Scan Pro$3.991 Month
- yearly$39.991 Year
Questions
Is Fibster free?
Is Truth Scan Biometric Polygraph free?
Do Fibster or Truth Scan Biometric Polygraph have ads?
Which is updated more often, Fibster or Truth Scan Biometric Polygraph?
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