BioDigital Lie Detector vs LieBuzzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BioDigital Lie Detector
This app simulates a lie detector, offering a fun way to guess if friends are telling the truth. It features realistic visuals and three distinct modes for generating results. Designed purely for entertainment, it allows users to playfully uncover secrets.
- Realistic lie detector simulation
- Voice level, stability, and balance analysis
- Three result methods: Random, One by One, Sequence
- Fool friends into revealing secrets
- Designed for entertainment purposes
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Have you ever wondered if your friend is lying or telling you the truth? Do you sometime feel that you need to know some of your friend’s secrets, but you feel he would never tell? Then you need a Polygraph (Lie Detector) device, however these devices are not commonly available. So we did it, and developed the most realistic Lie Detector simulator App, that looks and behaves just like real polygraph devices. it measures the person’s voice level, stability and balance, and displays feedbacks on the app screen in a very realistic way. The app looks very realistic, that you can easily fool your friends to believe that it’s the real deal, and they will tell their secrets without lying, we promise you. Just ask your friend to put his index finger on the scanner in the app screen, then ask him whatever question you want, then let him answer your question. once he finishes his answer, ask him to remove his finger, and the App will give you the result, either if it a lie or truth. The app provides three different methods of deciding the lie test result: 1- Random, and in this method, the lie test will give you a random result, either Lie or Truth. you cannot set or predict the result in advance, imagine how much fun you can have. 2- One by One, and this method enables you to set the result before each test. the possibilities are limitless. you can drive your friends crazy. 3- Sequence, and this is the most advanced method. it enables you to set a sequence of results, that the app follows. then you can just give the device to your friend and the app will follow your instructions without even touching it. no one will detect what you did. Install the Ultimate Polygraph - BioDigital Lie Detector now, and start having so much fun with your friends. *** Please note that this app does not provide real lie detection functionality, but only a simulation, it's meant for entertainment purposes only
LieBuzzer
This entertainment app offers a simple, interactive experience where users can tap their screen to trigger "truth" or "lie" sounds and visuals. It encourages playful interaction with friends through various touch gestures.
- Tap to play truth sound
- Tap to play lie buzzer
- Doubletaps and long presses
- Spamming interaction
- Share with friends
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Easy Use: Just tap the left side of your screen to play the "truth" sound or tap the right side to hear and see the "lie" buzzer. Also try doubletaps, long presses or spamming and have fun. Share with your friends!
Screenshots
Verdict
The clearest difference is review sentiment: LieBuzzer at 100% against BioDigital Lie Detector's 50%. LieBuzzer also leads on rating (4.9 vs 2.1) and in-app purchases (none vs 1). BioDigital Lie Detector's advantage is iOS requirement (11.0 vs 16.5). On price, ratings volume and device support 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
Both are free to download. BioDigital Lie Detector sells 1 one-off in-app purchase. LieBuzzer asks for nothing beyond the download.
LieBuzzer holds the better App Store score, 4.9 against 2.1. Both are backed by a comparable volume of ratings — 7 and 14 respectively. Written reviews point the same way: 50% of BioDigital Lie Detector's written reviews are positive against 100% of LieBuzzer's.
BioDigital Lie Detector ships an update every 5 months, LieBuzzer daily. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | BioDigital Lie Detector | LieBuzzer |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (7 ratings) | 4.9 (14 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 | 14 — better |
| Update frequency | Every 5 months | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.5 |
| Further details — not scored | ||
| Size | 19 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tamer Abdel-Baset | Hovhannes Shahnazaryan |
Customer experience
BioDigital Lie Detector
LieBuzzer
In-app purchases
BioDigital Lie Detector
- Activate Lie Detector Pro$0.99
LieBuzzer
No in-app purchases
Questions
Is BioDigital Lie Detector free?
Is LieBuzzer free?
Which has better reviews, BioDigital Lie Detector or LieBuzzer?
Do BioDigital Lie Detector or LieBuzzer have ads?
Which is updated more often, BioDigital Lie Detector or LieBuzzer?
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