h2Dr vs Skelly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
h2Dr
This app enhances a drawing book by linking printed pages to online video tutorials. Readers can use their devices to access over 10 hours of advanced video content, keeping the educational material current with rapidly advancing techniques.
- AR trigger image integration
- Direct link to online tutorials
- Over 10 hours of video content
- Updates with advancing techniques
- Companion app for a physical book
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This is the companion app for the new Design Studio Press book: How to Draw. Enhancing the learning experience, this app has been created to allow readers to use trigger images on pages to link directly to online tutorials via their iPhones and iPads. Using advanced video techniques, this app connects the printed matter to online digital educational content as never before, and insures that the book remains as current as the rapidly advancing techniques presented in How to Draw. Over 10 hours of video content have been created to accompany the book. A physical copy of How to Draw is required to get the most out of the h2Dr app. Additionally, an internet connection is required to view the video content. You can get your copy of the How to Draw book by visiting: http://designstudiopress.com For downloadable examples of the Trackers and for a demo video, please visit: http://scottrobertsonworkshops.com/h2dr/trackers/ Our Privacy Policy can be viewed in-app or at: https://designstudiopress.com/policies/privacy-policy/
Skelly
This app provides artists with a fully poseable, anatomically correct skeleton model for reference. Easily create custom poses, adjust lighting, and view from any angle to improve your drawing, sculpting, and illustration skills.
- Anatomically correct skeleton
- Poseable joints
- Pose library
- Movable camera
- Adjustable light source
- Simplified 'Robo Skelly' model
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Hey artists! Tired of scouring the internet for reference material? Does the NSA think you’re a weirdo for looking up all those skeleton pictures? Got no-body to pose for you? Its going tibia ok, the Skelly app is just what you need! With the Skelly app you can literally pull the inspiration you need right out of your pocket anywhere, anytime! Skelly is a fully poseable, anatomically correct reference skeleton for artists. A simplified version of the skeleton is also included, named “Robo-Skelly”. These figures were created to make the study of anatomy easier and more enjoyable for students and professionals without leaving your wallets bone dry. They can also be used to inspire poses for drawing, painting, sculpting, illustration, animation, comics, manga, storyboarding, twerking, and to fully understand the anatomy of the human skeleton. No need for super gluteus, Skelly comes pre-assembled and ready to pose as soon as you launch the app! Learning the structure of the human body is the skeleton key to drawing the figure in an anatomically correct manner without having to clear your browser history to avoid awkward conversations with your loved ones. Whether you want to make works like Michelangelo or Miyazaki, Skelly will help you focus on your art and let you personalize his poses, rather than searching for reference material and hiring models. Learn to draw the skeleton from any angle without the inconvenient and morally questionable need to go grave robbing. FEATURES: Anatomically correct skeleton Simplified “Robo Skelly” Proportions based on the teachings of Dr. Paul Richer Skull fits perfectly into a “Loomis Head” as taught by Andrew Loomis Poseable joints Pose Library - choose from pre made poses and save your own Movable camera Adjustable light source Choose light or dark background Reset to neutral “Anatomical Pose” PEOPLE LOVE IT: James Gurney, author of ‘Color and Light’ and ‘Imaginative Realism’ Says: "Bend him, twist him, contort him! The Skelly app lets you put a virtual human skeleton into any pose, and to see him from any angle, and in any lighting. It’s a great tool for art students or professionals wondering what the skeleton is really doing beneath a life pose, or for anyone wanting to visualize a pose from scratch. The interface is intuitive to learn and easy to use, without sacrificing any of the nuances of the human body’s complex range of movement. Skelly is a big improvement over the old wooden mannikin." - Chris Oatley, Director Of The Oatley Academy Of Visual Storytelling Says: "Skelly is the fastest, most fluid anatomical reference I have ever seen. I was shocked at how easy it is to pose the figure and direct the light source. Finally! It’s the app visual artists have been waiting for." Have any questions? CONTACT US: skelly@proko.com
Screenshots
Verdict
The clearest difference is price: h2Dr at Free against Skelly's $6.99. h2Dr also leads on update cadence (every 4 months vs every 8 months). Skelly's advantage is review sentiment (69% vs 37%) and rating (3.8 vs 3.6). On ads, in-app purchases, monetization model 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
h2Dr is free to download; Skelly costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Skelly holds the better App Store score, 3.8 against 3.6. That said, the two scores are not equally well evidenced: Skelly has 117 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 37% of h2Dr's written reviews are positive against 69% of Skelly's.
h2Dr ships an update every 4 months, Skelly every 8 months. Both last shipped on November 1, 2026.
| Parameter | h2Dr | Skelly |
|---|---|---|
| Price | Free — better | $6.99 |
| Rating | 3.6 (9 ratings) | 3.8 (117 ratings) — better |
| Positive reviews | 37.1% of reviews | 69.3% of reviews — better |
| Number of ratings | 9 | 117 — better |
| Update frequency | Every 4 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | — | #133 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 147 MB | 104 MB |
| Age rating | 4+ | 4+ |
| Developer | Design Studio Press | Proko |
Customer experience
h2Dr
Skelly
User reviews
h2Dr
From 9 App Store ratingsWhat we love
- 💡 Great addition to reading
- 👍 Videos enhance understanding
- ✨ Innovative AR concept
- 🚀 Works well for some users
- 💯 Content is valuable
Room to improve
- 🔇 No sound in videos
- 🐛 App frequently broken/not working
- 🐌 Slow page recognition
- 🚫 Camera issues (black screen, freezes)
- ❌ Lacks captions
Skelly
From 117 App Store ratingsWhat we love
- 👍 Intuitive and easy-to-use posing controls
- 💡 Excellent reference tool for artists and anatomists
- 🎨 Ability to switch between skeleton and basic shapes
- 💡 Adjustable lighting and viewing angles
- 🌟 High-quality, accurate anatomical model
Room to improve
- ❌ Cannot pose individual fingers or toes
- ❌ Cannot articulate the jaw
- ❌ Unrealistic joint rotation limits (360-degree movement)
- ❌ Poor camera controls and navigation
- ❌ Limited field of view options
Bugs and requests
h2Dr
Reported bugs
18 issues- No sound in videos
- App freezes or crashes
- Camera not activating or black screen
- Page recognition issues
- Videos not playing
Show 13 moreShow fewer
- App not working on newer iOS versions
- Tracker not recognized
- On-screen controls not working
- Black camera bug
- Camera freezes under iPad iOS 12.1.1
- App crashes every time it's opened
- Blank screen on startup
- Cannot access camera with proper settings
- App crashes and has random problems
- Videos don't play when play buttons are pressed
- Videos look ready to play but don't
- App stopped working after iOS update
- Augmented reality 3d models are vibrating and jittery
Requested features
4 requests- Add Japanese subtitles
- Provide a simple menu for videos
- Update for newer iOS versions
- Fix bugs and improve stability
Skelly
Reported bugs
10 issues- Camera controls are unintuitive and frustrating
- Selecting one bone sometimes selects a different bone
- Zoom function accidentally rotates the model
- Hip rotation rotates entire skeleton instead of just hips
- iPad Pro UI elements are too large and obstruct view
Show 5 moreShow fewer
- Save/export image function broken
- App slows down with 7+ saved poses
- Lighting quality poor on Retina displays
- Controls operate in opposite direction of intended movement
- iPad split-screen multitasking incompatibility
Requested features
26 requests- Posable fingers and toes with individual joint control
- Movable jaw with open/close functionality
- Undo/redo functionality
- Physics toggle to prevent unrealistic poses
- Female skeleton model with different proportions
Show 21 moreShow fewer
- Muscle layer visualization
- Adjustable limb lengths for different body types
- Multiple skeleton models at once
- Photo overlay/underlay for pose matching
- Customizable field of view (focal length)
- Preset hand gestures (fist, relaxed, etc.)
- Inverse kinematics (IK) rigging for limbs
- Ground plane and perspective plane options
- Joint locking capability
- Anatomically-correct range of motion limits
- Export with transparent background (PNG)
- White background option
- Front/side/top/bottom orthographic views
- Multiple light sources with color control
- Articulated hand-only or skull-only modes
- Child, adolescent, and infant skeleton options
- Background upload capability
- Animation/keyframe support
- Improved hip/pelvis posing controls
- Elbow side-to-side rotation
- Thoracic spine articulation
In-app purchases
h2Dr
No in-app purchases
Skelly
No in-app purchases







