Comparison

AI Lie Detector vs Simple Motion

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

Head to head
About

AI Lie Detector

This entertainment app uses AI to analyze photos and generate playful, surprising results for fun. Upload images or use your camera to see entertaining interpretations of facial cues, perfect for sharing with friends and sparking laughter. It's designed purely for amusement and does not offer scientific lie detection.

Highlights
  • Image-based AI analysis
  • Playful and surprising results
  • Shareable with friends
  • Magic 8 Ball feature
  • Sound effects
  • Flashlight and screen light tools
Features
Read full description

Curious what your expressions might reveal? AI Lie Detector is a fun and interactive entertainment app that analyzes images to generate playful and surprising results. Simply upload a photo or use your camera and see what the app “thinks” — just for fun. Using AI-based visual interpretation, the app looks at facial cues and creates entertaining responses designed to spark curiosity and laughter. The results are not scientifically accurate and are meant purely for entertainment purposes. How It Works ► Image-Based Analysis Upload a photo or capture a moment. The app uses AI to interpret visual cues and generate fun insights. ► Playful AI Responses Get creative and unexpected results based on expressions and visual details. ► Share with Friends Try it with friends and compare funny outcomes together. Fun Extras ► Palm-Based Analysis Capture or upload your palm. The app interprets lines and shapes to generate fun insights. ► Magic 8 Ball Ask questions and receive fun, mysterious answers. ► Sound Effects Add humor to your experience with entertaining sounds. ► Flashlight & Screen Light Simple tools when you need quick light. Disclaimer: Palm Reading results are not scientifically accurate and are intended purely for entertainment purposes. Why You’ll Enjoy It • Fun and engaging experience • AI-generated playful results • Easy to use • Great for social moments Disclaimer: This app does not perform real lie detection or provide scientific analysis. All results are generated for entertainment purposes only. --- Payment and Membership Subscription: To access premium features, subscriptions are available: • Weekly subscription • Monthly subscription • Annual subscription Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. You can manage your subscription in your iPhone Settings. --- Privacy Policy: https://hiai.dev/ld/privacy-policy.html Terms of Use: https://hiai.dev/ld/terms-of-use.html Support: support@hiai.dev

About

Simple Motion

Create hand-drawn animations with a focus on traditional animation techniques. Features include a drawing canvas, timeline, onion skinning, and multiple layer types for various animation styles. Ideal for learning and creating animations on mobile devices.

Highlights
  • Hand-drawn animation tools
  • Onion skinning for frame-by-frame animation
  • Timeline with frame manipulation
  • Multiple layer types (drawing, stop motion, video, audio)
  • Apple Pencil support with pressure and tilt
  • Shape recognition and paint fill
  • Reference image/video pinning
Features
Read full description

Draw a frame. Draw the next one. Press play. Simple Motion is a hand-drawn animation studio for iPad and iPhone, built around the way animation is actually taught — a stack of drawings, a timeline, and an onion skin to keep it all moving. Everything a student needs is one tap away, and everything they don't need stays out of the way. **Draw with Apple Pencil, the way it should feel** Ink is pure PencilKit, so it's as fast and as natural as writing on paper, pressure, tilt, double-tap, the lot. Pinch to zoom, twist to rotate the canvas to a comfortable angle, and tap four fingers to hide every tool and see only your drawing. Shape recognition turns a wobbly circle into a clean one when you hold still at the end of a stroke, and the paint fill tool floods an outline in a single tap. **See your animation move while you draw it** Onion skin ghosts the frames either side in red and blue, with independent counts for before and after. Flip and roll through neighbouring frames to check your motion — the fundamental animator's flick, now a button. Playback runs at your project's frame rate with a scrubbable playhead, custom in and out points, and looped ranges. **A timeline that works like a real dope sheet** Pinch the timeline to zoom through five sizes; past the middle rung every cell shows a thumbnail of the drawing on it. Hold a drawing across frames, build cycles and ping-pongs from a range, drag frames to reorder them, copy and paste between layers and projects, and use select mode to act on a batch at once. Named, coloured markers keep track of beats and dialogue. **Layers for every kind of animation** Eight layer types: Drawing, Stop Motion, Image, Video, Audio, Guide, Adjustment and Annotation. Shoot claymation with the built-in stop-motion camera and its ghost alignment overlay. Rotoscope over an imported video, sampled on ones, twos or threes. Add a soundtrack and trim, cut and slide it against the picture. Drop in a Guide layer for motion arcs and timing charts that appear over everything and never export. Reorder, hide, lock, merge, duplicate, and set opacity or blend modes per layer. **Colour, assets and references, always to hand** A floating colour palette you can drop anywhere on screen, with a proper picker, an eyedropper with a magnifier, and your five most recent colours one tap away. Build a library of reusable drawings — mouth shapes for lip-sync, a set of hands, a logo — stored with the project and stamped onto the canvas as real, editable ink. Move a whole library between projects as a single file. Pin a reference photo or video in a floating panel, zoom into a detail, and pick colours straight off it. **Made for a classroom** Organise the gallery into folders by class or assignment, search across all of them at once, and sort by name or by what was opened last. Save any project as a template, hand it out, and every student who taps it starts a fresh copy with the canvas size, frame rate and guide layers already set — the original is never drawn on. Back up a project to a single file to collect, archive or move between iPads. **Share it however you need** Export an animated GIF, an MP4 with its soundtrack, a sprite sheet, a single PNG frame, or a numbered image sequence with your choice of naming convention. Stills and sequences can keep a transparent background for use elsewhere. Every export renders at full resolution, whatever quality you preview at. **Nothing is ever lost** Every action that changes a drawing can be undone, several steps back, from the toolbar or the snackbar that appears the moment something is deleted. Two fingers to undo, three to redo, straight on the canvas. Twelve drawings and an idea is all it takes.

Screenshots

AI Lie Detector4 screens
Simple Motion3 screens

Verdict

The call

The clearest difference is price: AI Lie Detector at Free against Simple Motion's $2.99. AI Lie Detector also leads on ratings volume (44 vs 1) and iOS requirement (15.0 vs 26.0). Simple Motion's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 17). On 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

CostPrice · In-app purchases · Ads · Monetization

AI Lie Detector is free to download; Simple Motion costs $2.99 up front. AI Lie Detector sells 17 in-app purchases, starting at $3.49 per 7 days. Simple Motion asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Simple Motion holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: AI Lie Detector has 44 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

AI Lie Detector ships an update every 5 weeks, Simple Motion every 8 days. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

Scorecard7 real differences · 3 level
AI Lie Detector versus Simple Motion: the parameters behind the verdict, then further details
ParameterAI Lie DetectorSimple Motion
PriceFree — better$2.99
Rating4.3 (44 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings44 — better1
Update frequencyEvery 5 weeksEvery 8 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size37 MB4 MB
Age rating4+4+
DeveloperFirat CaliskanDuncan Pollock

Customer experience

AI Lie Detector

All ratings44 ratings
Positive81.8%
Neutral2.3%
Negative15.9%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Simple Motion

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

17 purchases

AI Lie Detector

Subscriptions15
  • Weekly$3.497 Days
  • Weekly$3.997 Days
  • Weekly$4.997 Days
Show 12 more
  • Lie Detector Premium Weekly3 Days trial$6.997 Days
  • Lie Detector Premium Weekly$6.997 Days
  • Lie Detector Premium Weekly$7.997 Days
  • Lie Detector Premium Weekly3 Days trial$7.997 Days
  • Lie Detector Premium Weekly3 Days trial$8.997 Days
  • Lie Detector Premium Weekly$8.997 Days
  • Monthly$9.991 Month
  • Monthly$11.991 Month
  • Yearly$19.991 Year
  • Yearly3 Days trial$29.991 Year
  • Lie Detector Premium Yearly$49.991 Year
  • Lie Detector Premium Yearly3 Days trial$49.991 Year
One-time2
  • Lifetime Premium$59.99
  • Lifetime Premium$99.99
None

Simple Motion

No in-app purchases

Questions

Is AI Lie Detector free?
AI Lie Detector is free to download, with in-app purchases available.
Is Simple Motion free?
Simple Motion costs $2.99, with no in-app purchases.
Which has better reviews, AI Lie Detector or Simple Motion?
Simple Motion is rated higher. AI Lie Detector averages 4.3 out of 5 from 44 ratings, while Simple Motion averages 5.0 from 1 ratings.
Do AI Lie Detector or Simple Motion have ads?
Neither AI Lie Detector nor Simple Motion shows ads.
Which is updated more often, AI Lie Detector or Simple Motion?
AI Lie Detector ships an update every 5 weeks, and Simple Motion every 8 days. Most recently, AI Lie Detector was updated on October 24, 2026 and Simple Motion on October 15, 2026.

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