Lie Finder vs Polygraph AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lie Finder
This entertainment app claims to detect lies by analyzing voice audio. It processes sound frequencies to differentiate between truthful and deceptive speech, offering a fun way to uncover the truth in everyday situations. Use it to test friends, family, or even pets for amusement.
- Voice audio analysis
- Pseudo-Dynamic Wave Interpretation
- Lie detection
- Fun for friends and family
- Real-time feedback
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If you wanted to know if someone was lying or telling the truth, you'd have to hook them up to a polygraph machine in a dimly lit room, or hire some expensive CIA investigator to go analyze them interrogation room style. But, ALL THAT HAS CHANGED! Introducing the LIE FINDER! Using complex Pseudo-Dynamic Wave Interpretation, the Lie Finder is 47.3825% accurate at detecting if you are lying or not just by listening to the sound of your own voice. It can eliminate between the frequencies of a truthful person and a liar, process the data stream, and feedback the results to you in a way that is easy to understand and FUN! Try it on your friends! Try it on your enemies! Try it on your pets! The days of being lied to are over! Did grandma drop her dentures in the soup and fish them out without telling anyone? Did your little brother fart and blame you for it? Are your friends secretly visiting pet shops and teaching all the parrots dirty words? Now you will know THE TRUTH! The LIE FINDER! Finding Lies One Lie at a Time! Disclaimer - This app uses the audio from the microphone of your device to process if you or your friends are telling the truth or lying. This app is limited to the audio input and processing capabilities of your device and, as it is not 100% accurate, should not be used in any instances where knowing truth from lie is mission critical. Please use this app to have fun with your friends!
Polygraph AI
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Polygraph AI: Lie Analysis is your personal stress and truth detector. Ever wondered if someone is feeling tense during a conversation? Our advanced AI analyzes voice frequencies to detect micro-tremors and stress levels, providing you with a fun and engaging "truth verdict."
Screenshots
Verdict
The clearest difference is ads: Lie Finder at none against Polygraph AI's shown. Polygraph AI's advantage is update cadence (every 2 days vs every 2 months). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Lie Finder ships an update every 2 months, Polygraph AI every 2 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.
| Parameter | Lie Finder | Polygraph AI |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (5 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 119 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | AndEtc, Inc. | Andres Saiz Ruiperez |
In-app purchases
Lie Finder
No in-app purchases
Polygraph AI
No in-app purchases
