Lie Detector Test vs Lie / Truth Detector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lie Detector Test
Simulate a lie detector test using your fingerprint. Fool your friends with this fun prank app that analyzes a "scan" of their finger to determine if they are telling the truth or lying. Perfect for lighthearted entertainment.
- Fingerprint scanner simulation
- Prank mode to fool friends
- Fake lie/truth results
- Laser Xray effect
- Random result generation
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Start the scan your fingerprint and say something to see if it is true or a lie. Place your finger on the scanner area and allow scanner begin. Laser Xray will go throught your finger. Use the prank features to fool everyone with this fake lie detector test. Instruction for prank mode: Start by touching and holding friend's finger down on the scan area. First time you see a random result. On result screen tap on the left side of button for “False", and on the right for "True". Pressing the restart button will give a random result. Disclaimer: This application is only a prank trick for fun. it's not a real polygraph lie detector.
Lie / Truth Detector
Simulate a lie or truth detector with this fun app. Analyze what your friends and family say and see if the simulated polygraph detects truth or lies. Features fantastic graphics and effects for hours of entertainment.
- Simulates lie/truth detection
- Polygraph simulation
- Fantastic graphics
- Engaging effects
- Hours of fun
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Do you want to have fun with your friends and family by simulating with this truth and lie detector or polygraph simulator? Simulate if what they are saying would be true or false Characteristics: - "Lie or truth detector / polygraph" simulates that you analyze what you are saying - Fantastic graphics and effects - Have fun for hours with this truth and lie detector simulator. - Simulate using a polygraph Disclaimer: This polygraph / lie detector app is designed for entertainment purposes only and does not provide real truth detector functionality.
Screenshots
Verdict
The clearest difference is rating: Lie / Truth Detector at 4.0 against Lie Detector Test's 3.4. Lie / Truth Detector also leads on update cadence (monthly vs every 42 months). Lie Detector Test's advantage is in-app purchases (none vs 3) and ratings volume (1.6K vs 291). On price, review sentiment, ads 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. Lie / Truth Detector sells 3 one-off in-app purchases. Lie Detector Test asks for nothing beyond the download.
Lie / Truth Detector holds the better App Store score, 4.0 against 3.4. That said, the two scores are not equally well evidenced: Lie Detector Test has 1.6K ratings behind it against 291, so its average is the more settled of the two. Written reviews point the same way: 36% of Lie Detector Test's written reviews are positive against 44% of Lie / Truth Detector's.
Lie Detector Test ships an update every 42 months, Lie / Truth Detector monthly. The most recent releases landed on September 25, 2026 and September 14, 2026 respectively.
| Parameter | Lie Detector Test | Lie / Truth Detector |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (1.6K ratings) | 4.0 (291 ratings) — better |
| Positive reviews | 36.5% of reviews | 44.4% of reviews — better |
| Number of ratings | 1.6K — better | 291 |
| Update frequency | Every 42 months | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 22 MB | 120 MB |
| Age rating | 4+ | 4+ |
| Developer | Denis Batishchev | Luis Hernando Prada |
Customer experience
Lie Detector Test
Lie / Truth Detector
Bugs and requests
Lie Detector Test
Reported bugs
2 issues- Incorrectly identifies true statements as lies
- Freezes after each use
Requested features
2 requests- More realistic lie detection
- Option to change language
Lie / Truth Detector
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Lie Detector Test
No in-app purchases
Lie / Truth Detector
- Remove the ads$2.99
- AI Detector$3.99
- All features + no ads$5.99
Questions
Is Lie Detector Test free?
Is Lie / Truth Detector free?
Which has better reviews, Lie Detector Test or Lie / Truth Detector?
Do Lie Detector Test or Lie / Truth Detector have ads?
Which is updated more often, Lie Detector Test or Lie / Truth Detector?
Other comparisons
