Comparison

Optical illusion hypnosis vs Joint Angle Camera

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

Head to head
About

Optical illusion hypnosis

Experience a unique blend of visual wonder and mental relaxation with mesmerizing optical illusions. This app offers a calming space to unwind, escape stress, and find creative inspiration through captivating visuals and meditative experiences.

Highlights
  • Mesmerizing visual illusions
  • Relaxation Mode with ambient music
  • Create and share custom illusions
  • Learn the science behind perception
  • Customizable experience with soundtracks and timers
Features
Read full description

Relax your mind through mesmerizing visual illusions. Enter a calming space where reality bends and your thoughts unwind. Discover a unique blend of visual wonder and mental relaxation with our optical illusion app. Designed not just to amaze, but also to soothe, each illusion offers a moment of pause, a gentle escape for your mind. App Highlights: Illusions that calm and captivate – From flowing patterns to visual paradoxes, explore illusions that both stimulate and relax. Relaxation Mode – Pair ambient music with hypnotic visuals for a meditative sensory experience. Create & Share – Design your own illusions and share them with a creative and curious community. Learn the Science – Dive into the psychology behind perception and discover why the brain loves to be fooled. Customize Your Experience – Choose soundtracks, set display timers, and select illusion categories to match your mood. Perfect for moments of stress relief, creative inspiration, or just a break from a busy day. Ideal for lovers of art, psychology, and anyone who enjoys a mindful visual journey. A new way to relax — where the eye sees, and the mind lets go. Download now and turn every moment into a peaceful illusion. Optical Illusions & Relaxing Visuals – See the unseen, feel the unreal.

About

Joint Angle Camera

Features
Read full description

Joint Angle Camera uses your phone’s camera to estimate joint angles on the device, so you can check your movement during fitness, stretching, and teaching demos. Follow the on-screen guide, move through your range, and see a live pose overlay with approximate angles. This app is not a medical device. It does not diagnose or treat any condition and does not replace a professional evaluation. Angles are estimates and may be wrong. Use them only for everyday fitness and self-tracking—not for medical decisions. WHAT YOU CAN DO • Live pose overlay: keypoints and skeleton on the camera preview with approximate angle readouts • Eight body regions: neck, shoulder, elbow, wrist, waist, hip, knee, and ankle—each with focused movement modes (for example nodding, side tilt, arm raises, and knee bends) • Positioning guides: front or side facing cues and a silhouette to help you line up • Peak hold: keeps the highest estimated angle from a movement so you can compare sessions • On-device history: filter by region, movement, and side; edit pose snapshots; share a single-session PDF • Pro: mobility trend charts and session video with skeleton and angle overlays • Screenshots: save annotated preview frames to Photos • Privacy first: pose and angle processing runs on your device—no account, no upload of camera feed or biometrics FREE VS PRO Free: unlimited real-time neck and elbow estimates with positioning guidance, history, single-record PDF share, and the full notice & privacy policy. Pro regions (shoulder, waist, hip, knee, ankle, wrist): 10 free trials each; one-time purchase unlocks all Pro regions plus trend charts and overlay video. Billed through the App Store. TIPS • Use good light and a clear background; fitted clothing helps tracking • Readings depend on stance, occlusion, and image quality and may be inaccurate • Stop immediately if you feel pain or discomfort IMPORTANT This app is not a medical device and is not medical advice, diagnosis, or treatment. All angles are on-device estimates for fitness, stretching, and teaching only. Do not use them for medical decisions. Available in English and Chinese (Simplified); switch language in the app.

Screenshots

Optical illusion hypnosis4 screens
Joint Angle Camera4 screens

Verdict

The call

The clearest difference is ads: Joint Angle Camera at none against Optical illusion hypnosis's shown. Joint Angle Camera also leads on update cadence (every 3 weeks vs every 5 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Optical illusion hypnosis sells 4 in-app purchases, starting at $3.49 per month and Joint Angle Camera sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Optical illusion hypnosis ships an update every 5 months, Joint Angle Camera every 3 weeks. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Optical illusion hypnosis versus Joint Angle Camera: the parameters behind the verdict, then further details
ParameterOptical illusion hypnosisJoint Angle Camera
PriceFreeFree
Rating4.2 (955 ratings) — better—
Positive reviews54.6% of reviews—
Number of ratings955 — better—
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.5
Further details — not scored
Size97 MB61 MB
Age rating4+4+
DeveloperAstrologic Games LTDA鹏 徐

Bugs and requests

Optical illusion hypnosis

Reported bugs

3 issues
  • App crashes or gets stuck on red screen
  • Ads don't load properly, preventing access to other levels
  • Inconsistent performance across devices

Requested features

4 requests
  • Add more variety of illusions
  • Reduce ads or offer ad-free version
  • Improve performance on older devices
  • Add color/visual customization options

Joint Angle Camera

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Optical illusion hypnosis

Subscriptions1
  • VIP Access3 Days trial$3.491 Month
One-time3
  • Remove Ads$1.99
  • Extreme FX Pack$1.99
  • Color FX Pack$1.99
1 purchases

Joint Angle Camera

One-time1
  • Unlock Pro forever$4.99

Questions

Is Optical illusion hypnosis free?
Optical illusion hypnosis is free to download, with in-app purchases available.
Is Joint Angle Camera free?
Joint Angle Camera is free to download, with in-app purchases available.
Do Optical illusion hypnosis or Joint Angle Camera have ads?
Optical illusion hypnosis shows ads; Joint Angle Camera does not.
Which is updated more often, Optical illusion hypnosis or Joint Angle Camera?
Optical illusion hypnosis ships an update every 5 months, and Joint Angle Camera every 3 weeks. Most recently, Optical illusion hypnosis was updated on October 17, 2026 and Joint Angle Camera on October 7, 2026.

Other comparisons