Comparison

BioDigital Lie Detector vs LieBuzzer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

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.

Highlights
  • Tap to play truth sound
  • Tap to play lie buzzer
  • Doubletaps and long presses
  • Spamming interaction
  • Share with friends
Features
Read full description

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

BioDigital Lie Detector4 screens
LieBuzzer4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. BioDigital Lie Detector sells 1 one-off in-app purchase. LieBuzzer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
BioDigital Lie Detector versus LieBuzzer: the parameters behind the verdict, then further details
ParameterBioDigital Lie DetectorLieBuzzer
PriceFreeFree
Rating2.1 (7 ratings)4.9 (14 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings714 — better
Update frequencyEvery 5 monthsDaily — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better16.5
Further details — not scored
Size19 MB2 MB
Age rating4+4+
DeveloperTamer Abdel-BasetHovhannes Shahnazaryan

Customer experience

BioDigital Lie Detector

All ratings7 ratings
Positive28.6%
Neutral0.0%
Negative71.4%
Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

LieBuzzer

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

BioDigital Lie Detector

One-time1
  • Activate Lie Detector Pro$0.99
None

LieBuzzer

No in-app purchases

Questions

Is BioDigital Lie Detector free?
BioDigital Lie Detector is free to download, with in-app purchases available.
Is LieBuzzer free?
LieBuzzer is free to download, with no in-app purchases.
Which has better reviews, BioDigital Lie Detector or LieBuzzer?
LieBuzzer is rated higher. BioDigital Lie Detector averages 2.1 out of 5 from 7 ratings, while LieBuzzer averages 4.9 from 14 ratings.
Do BioDigital Lie Detector or LieBuzzer have ads?
BioDigital Lie Detector shows ads; LieBuzzer does not.
Which is updated more often, BioDigital Lie Detector or LieBuzzer?
BioDigital Lie Detector ships an update every 5 months, and LieBuzzer daily. Most recently, BioDigital Lie Detector was updated on October 29, 2026 and LieBuzzer on October 24, 2026.

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