Comparison

Face Lie Detector vs Line It Up Camera

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

Head to head
About

Face Lie Detector

Simulate lie detection using your device's camera and fingerprint scanner. This prank app offers a fun way to entertain friends with simulated truth or lie tests. Unlock advanced recording features through an in-app purchase for private use.

Highlights
  • Face scanner simulation
  • Fingerprint scanner simulation
  • Robotic voice output
  • Face detection auto-stop
  • In-app purchase for recording
Read full description

Inbuilt face scanner and fingerprint scanner both are available in this app for truth or lie detection. The app also speaks in robotic voice. Also, you can see when using the app that if you remove your face, the scanner stops and resumes only when you bring face back. But this app is actually a prank. Though if you want to use face detection and record it's truth or lie detection, you can do it by unlocking that feature using in-app purchase. That recording is completely private. NOTE - PLEASE READ THE INSTRUCTIONS ON FIRST START CAREFULLY AS THEY WON'T APPEAR AGAIN DUE TO THE NATURE OF PRANK. MAINLY THAT IS PRESSING LEFT OF START DETECTION BUTTON WILL GIVE TRUTH AND PRESSING RIGHT WILL GIVE LIE. Premium pack & features subscription: Face Lie Detector offers auto-renewing subscription options. Once you’ve confirmed your order, the payment will be charged to your account, with the right price for your country. The subscription will automatically renew at its end date. You can stop the automatic renewal any time. To avoid the renewal, cancel it at least 24h before the end date of your subscription. No refund is available for unused time. DISCLAIMER- It has no relation to any real lie detector. Just meant to the extent of playing prank. Anything you do which is other than entertainment purpose will be at your own risk. We will not be liable for any loses or damages. Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Line It Up Camera

Features
Read full description

Your camera should help you take better photos without making things more complicated. Line It Up Camera is an easy-to-use everyday camera with helpful framing tools. The photos you make with Line It Up just look better. COMPOSE WITH CONFIDENCE • Choose from practical General and People composition grids. • Let Auto Grid suggest a guide for the scene in front of you. • Save favorite grids for quick access. • Design one custom General grid and one custom People grid. • See leveling guidance in the viewfinder, then save a photograph that matches the corrected preview. CAPTURE THE MOMENT • Shoot JPEG or HEIF at your preferred quality. • Use Live Photos on eligible General and Landscape captures. • Add location metadata only when you choose. • Capture with the screen, supported hardware controls, Control Center, Shortcuts, or the secure Lock Screen camera experience. • Use burst capture and remote photo sets when one frame may not be enough. MADE FOR PEOPLE AND PLACES People guides combine intentional framing with depth-aware or on-device segmentation processing. The result is a finished photograph with a natural baked-in look—not an editable Portrait-mode asset. LIVE ACTIONS, ON DEVICE When enabled, Live Actions can recognize QR codes, text, addresses, phone numbers, email addresses, Wi-Fi QR codes, and documents. Recognition happens on your device. Document scans are assembled into a PDF for the system share sheet. APPLE WATCH REMOTE Use the Apple Watch companion as a remote viewfinder. Check framing, start a countdown, cancel it, or capture a remote photo set while the iPhone app is open and ready. PRIVATE BY DESIGN Line It Up has no account, advertising, behavioral analytics, developer-operated server, or cloud scan history. Core camera analysis and photo processing happen on your device. TRY EVERYTHING FREE Start a full seven-day trial with every feature, full quality, and no limits. The trial is not a subscription and never creates an automatic charge. If Line It Up earns a place in your camera bag, unlock it forever with one purchase.

Screenshots

Face Lie Detector3 screens
Line It Up Camera4 screens

Verdict

The call

The clearest difference is ads: Line It Up Camera at none against Face Lie Detector's shown. Line It Up Camera also leads on update cadence (every 5 days vs every 4 months). Face Lie Detector's advantage is iOS requirement (15.0 vs 26.5). On price, in-app purchases 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. Face Lie Detector sells 3 in-app purchases, starting at $0.99 per month and Line It Up Camera sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Face Lie Detector ships an update every 4 months, Line It Up Camera every 5 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Face Lie Detector versus Line It Up Camera: the parameters behind the verdict, then further details
ParameterFace Lie DetectorLine It Up Camera
PriceFreeFree
Rating3.5 (2.1K ratings) — better—
Positive reviews22.6% of reviews—
Number of ratings2.1K — better—
Update frequencyEvery 4 monthsEvery 5 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, Apple Watch
Requires iOS15.0 — better26.5
Further details — not scored
Size89 MB32 MB
Age rating9+4+
DeveloperKunal VermaMichael Seneschal

Bugs and requests

Face Lie Detector

Reported bugs

3 issues
  • Inconsistent results
  • Incorrectly identifies truths as lies
  • Doesn't work as advertised

Requested features

3 requests
  • Improve accuracy of lie detection
  • Add more 'truth' responses
  • Make face scan feature free

Line It Up Camera

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Face Lie Detector

Subscriptions2
  • Full Access Monthly3 Days trial$0.991 Month
  • Full Access (3 months)$1.993 Months
One-time1
  • Get more features and no ads.$0.99
2 purchases

Line It Up Camera

One-time2
  • 7-day TrialFree
  • Lifetime Unlock$19.99

Questions

Is Face Lie Detector free?
Face Lie Detector is free to download, with in-app purchases available.
Is Line It Up Camera free?
Line It Up Camera is free to download, with in-app purchases available.
Do Face Lie Detector or Line It Up Camera have ads?
Face Lie Detector shows ads; Line It Up Camera does not.
Which is updated more often, Face Lie Detector or Line It Up Camera?
Face Lie Detector ships an update every 4 months, and Line It Up Camera every 5 days. Most recently, Face Lie Detector was updated on November 2, 2026 and Line It Up Camera on October 31, 2026.

Other comparisons