Lie Detector by the Expression vs Ghost Vision SLS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lie Detector by the Expression
This app analyzes facial expressions in real-time to detect potential deception. It tracks eye movements, lips, and face shape, comparing them against nine expressions commonly associated with lying, based on psychological studies. Record a subject's face while asking questions to receive an instant 'Lie' or 'True' result.
- Real-time facial tracking
- Analyzes eye movement, lips, and face shape
- Detects nine common deception expressions
- Based on psychological studies
- Instant lie or truth results
- Record video for analysis
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Discover this lie detector that tracks the face expressions to know when someone tells a lie. Based in real psychology studies. "Lie Detector by the Expression" is based in live real tracking of the face. This app is able to track the eyes movement, lips and face shape to compare with nine different expressions that unconsciously make people when they lie. Instructions: Record the face of the user you want to track face and press record button. Ask him a question while you are recording the face. Press Stop button when the answer finishes and you will get instantly the result: Lie or True. Of course the result depends on the ability of user to keep a neutral face while answering. The result is not totally reliable, but is is based in real psychology studies. The expressions that are studied to determine the result are: 1) Eyes darting: People´s eyes usually dart back and forth when they feel uncomfortable. 2) Rapid Blinking: When people are stressed about lying, they may blink five or six times in rapid succession. 3) Closing eyes for more than one second at a time: People often close their eyes for more than a second at a time when they are lying. 4) Looking up to the right: Right-handed people usually look up to their right when they are about what they saw. 5) Looking directly to the right: Right-handed people look directly to their right when lying about what they heard. 6) Looking down to the right: Right-handed people often look down to their right when they are lying aout smells or sensations. 7) False smile: A false smile do not affect the eyes and it´s just done with the mouth. 8) Pursed lips: People may purse their lips to counteract the dry mouth that comes when lying. 9) Head shaking: If people shake their heads while saying something, they have just denied their statement. Download now "Lie Detector by the Expression" and do not try lie!
Ghost Vision SLS
This app uses advanced AI and lidar-enabled infrared imaging to detect human figures and provide unparalleled night vision. It offers 3D visualization, real-time alerts, and the ability to record and share findings, enhancing paranormal investigations.
- AI-driven infrared imaging
- Real-time human figure detection
- 3D visualization and analysis
- Night vision in total darkness
- Record and share findings
- Lidar-enabled functionality (iPhone Pro)
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Unlock the full potential of your paranormal investigation and experience a world previously unseen. See in low-light. See in total and complete darkness. Detect human figures. © See what cannot be seen. © Ghost Vision uses AI-driven software and hardware components similar to those found in ®Kinect-driven SLS devices, used by professional paranormal investigators worldwide. © Ghost Vision utilizes structured-light *lidar-enabled infrared imaging, AI-directed computer vision, GPU image filtering, and advanced hardware management to provide unparalleled night vision, 3D visualization, image processing, and real-time human figure detection. Key Features •Unparalleled, world-class, professional series software. •3D visualization and analysis. •Real-time human figure detection. •Automatically record and alert when a human figure is detected. •Detect human figures in any environment and virtually any lighting condition. •Lidar-enabled infrared depth-driven imaging.* •Lidar-enabled infrared-driven night vision. See in total and complete darkness.* •Twilight-enabled low-light visibility. See in extremely low-light environments. •Multiple state-of-the-art AI-driven vision models. •Filter ambient noise to isolate and enhance your surroundings. •Human figure joint confidence visualization. •Record, analyze, and share photos and video recordings. •Intuitive, professional, easy-to-use design. •Extensive help section. •Easy access to customer support. •Lifetime updates. *Lidar-enabled functionality is available only on iPhone Pro devices. Frustration Free •No Ads •No Gimmicks •World-Class Customer Support If you have any questions, comments, or concerns about this app, please contact us at: JedaSoftwareSystemsHelp@gmail.com https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Lie Detector by the Expression at 91% against Ghost Vision SLS's 48%. Lie Detector by the Expression also leads on device support (3 vs 1) and iOS requirement (11.0 vs 18.0). Ghost Vision SLS's advantage is rating (4.6 vs 4.2) and ratings volume (355 vs 60). On price, update cadence, ads and in-app purchases 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 Detector by the Expression sells 1 one-off in-app purchase and Ghost Vision SLS sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Ghost Vision SLS holds the better App Store score, 4.6 against 4.2. That said, the two scores are not equally well evidenced: Ghost Vision SLS has 355 ratings behind it against 60, so its average is the more settled of the two. Written reviews complicate that: 91% of Lie Detector by the Expression's written reviews are positive against 48% of Ghost Vision SLS's, so the app with the better star average is not the one people write more warmly about.
Lie Detector by the Expression ships an update every 3 months, Ghost Vision SLS every 4 months. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.
| Parameter | Lie Detector by the Expression | Ghost Vision SLS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (60 ratings) | 4.6 (355 ratings) — better |
| Positive reviews | 91.3% of reviews — better | 48.3% of reviews |
| Number of ratings | 60 | 355 — better |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 40 MB | 176 MB |
| Age rating | 4+ | 9+ |
| Developer | Jorge Gregorio Martin Bello | Michael Weber |
Customer experience
Lie Detector by the Expression
Ghost Vision SLS
Bugs and requests
Lie Detector by the Expression
Not enough reviews yet to summarise bugs or requests.
Ghost Vision SLS
Reported bugs
7 issues- Recorded files corrupted (no video/audio)
- Bug with turning LiDAR on/off in landscape orientation
- App freezes and not functioning
- Paid features not unlocking after payment
- App does not open after payment
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- Glitch when trying to look at ghosts
- App doesn't work after monthly payment
Requested features
7 requests- Allow trial for paid features
- Add 4K recording
- Offer different color options for LiDAR depth and joints
- Option to save visible color video and LiDAR depth separately
- Repair corrupted video feature
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- Connect Xbox Kinect
- Dark mode option
In-app purchases
Lie Detector by the Expression
- Unlimited time$1.99
Ghost Vision SLS
- Full Access Subscription$1.991 Month
- Lifetime Full Access$11.95
Questions
Is Lie Detector by the Expression free?
Is Ghost Vision SLS free?
Which has better reviews, Lie Detector by the Expression or Ghost Vision SLS?
Do Lie Detector by the Expression or Ghost Vision SLS have ads?
Which is updated more often, Lie Detector by the Expression or Ghost Vision SLS?
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