iRhino 3D vs Model Scaler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iRhino 3D
View and present 3D models from Rhino 3D on your iPhone or iPad. Navigate models with intuitive touch gestures, load files from various sources, and visualize them in augmented reality. Includes a markup tool for annotations.
- 3D model viewing
- Touch navigation (pan, zoom, orbit)
- Cloud storage integration
- Augmented Reality (AR) mode
- Integrated markup tool
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The official Rhino 3D viewer for iOS. View and present your work on your iPhone or iPad. Pan, zoom, and orbit with a tap or drag of your finger. Conveniently load models from your device or any cloud storage using a built-in file browser. Use the AR mode to see your model in space. Integrated markup tool lets you draw on top of a view.
Model Scaler
This tool instantly converts measurements between U.S. Customary and Metric units for any modeling scale. It's designed to be fast, easy, and efficient for all types of scale modelers.
- Instant scale conversion
- U.S. Customary to Metric
- Metric to U.S. Customary
- Supports any modeling scale
- Fast and efficient
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Instant scale conversion tool for any modeling scale. Fast, easy and efficient scale model conversion. Quickly convert U.S. Customary and Metric measurements into any scale. Perfect for all scale modelers, railroad modelers and tabletop gamers.
Screenshots
Verdict
The clearest difference is rating: iRhino 3D at 4.6 against Model Scaler's 2.9. iRhino 3D also leads on update cadence (fortnightly vs every 6 months) and review sentiment (55% vs 40%). Model Scaler's advantage is iOS requirement (9.0 vs 17.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
iRhino 3D holds the better App Store score, 4.6 against 2.9. That said, the two scores are not equally well evidenced: iRhino 3D has 80 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 55% of iRhino 3D's written reviews are positive against 40% of Model Scaler's.
iRhino 3D ships an update fortnightly, Model Scaler every 6 months. The most recent releases landed on September 20, 2026 and June 11, 2026 respectively.
| Parameter | iRhino 3D | Model Scaler |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (80 ratings) — better | 2.9 (12 ratings) |
| Positive reviews | 55.0% of reviews — better | 40.0% of reviews |
| Number of ratings | 80 — better | 12 |
| Update frequency | Fortnightly — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 296 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Robert McNeel & Associates | Woodland Scenics |
Customer experience
iRhino 3D
Model Scaler
Bugs and requests
iRhino 3D
Reported bugs
15 issues- App crashes with large or complex files
- LiDAR measurements significantly inaccurate (off by ~2x)
- Cannot open local files without cloud storage
- Incompatibility with newer iOS versions
- App crashes during room scanning
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- Save functionality errors
- File browser integration issues
- Google Drive connection errors (App Transport Security)
- Models rendering in black after updates
- Crashes on iPad Pro with object scan mode
- Unable to export scans in desired formats
- App fails to open on certain device models
- File thumbnails not displaying
- Texture UVW mapping not preserved
- Room scan omits doors and windows as objects
Requested features
20 requests- Full native Rhino with Grasshopper support
- Real editing and modeling tools
- Wireframe and shaded view options
- Orthographic views (top, front, right)
- Texture and material support
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- Dimension measurement tools
- iCloud Drive integration
- Microsoft OneDrive support
- Gumball transform tool for rotation/scaling
- Annotation and markup tools
- Display mode settings
- Named views panel
- Zoom select tool
- Room scan with door/window preservation
- File thumbnails in library view
- Background color customization
- Ability to add rooms to existing scans
- Support for Rhino 6 and 7 files
- Stereo 3D view options
- Video recording of model walkthroughs
Model Scaler
Not enough reviews yet to summarise bugs or requests.
In-app purchases
iRhino 3D
No in-app purchases
Model Scaler
No in-app purchases
Questions
Is iRhino 3D free?
Is Model Scaler free?
Which has better reviews, iRhino 3D or Model Scaler?
Do iRhino 3D or Model Scaler have ads?
Which is updated more often, iRhino 3D or Model Scaler?
Other comparisons
