Fibster: Lie Detector
Fibster: Lie Detector is #113 in Entertainment Paid in United Kingdom and charting in 1 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperDrew Smith
CategoryEntertainment
Price6.99 GBP
Released
Rating★ 0.0 (0)
Version1.0.6
Age rating4+
First seen by us
25 Sep 2026
Rating
0.0 ★
0 ratings
Measured
Best rank now
#113
Measured
Fibster: Lie Detector on the App Store
App details
App ID
6478163053
Publisher
Drew Smith
Minimum OS
iOS 16.4+
Content rating
4+
Languages
1
EN
Size
3 MB
Where Fibster: Lie Detector's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| EntertainmentPaid | #113 |
Apps near Fibster: Lie Detector on the chart
Entertainment Paid, around #113.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About Fibster: Lie Detector
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
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
Latest updates
1.0.6
- Added Heart Rate Graph; Shows Fluctuations in Real-Time (Normal[green]-High[Red])
- Added Heart Rate Chart on Results Screen; Improved Transparency
- Removed "Ask" and "Answered" Buttons; Easier/Improved User Experience
- Added Value and Removed Subscriptions & Free Version; Updated to Paid-App Only
- Early Adopters (Existing Users) Will be Given Free Access; Thank You for Your Support!
- Bug Fixes /\/\(•⏝•)/\/\