3D Model Viewer vs CADDaddy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3D Model Viewer
View and interact with various 3D model formats in both AR and 3D modes. This intuitive tool supports local and cloud documents, custom backgrounds, and shadow casting. Easily import models via multiple methods and share your creations.
- AR and 3D viewing modes
- Supports numerous 3D file formats
- Local and cloud document integration
- Customizable backgrounds and shadows
- Model information display (size, volume, etc.)
- Multiple import and sharing options
Read full descriptionHide full description
An advanced 3D model viewer for viewing all kinds of 3D models. Featuring AR viewing, custom rotation pivot and exploded assembly view. Preview mesh models including OBJ, STL, STP, DAE, PLY and Blend, supporting rendering, animation playback, 3D printing and model data inspection. Features 1. Support AR and 3D viewing modes. 2. Customizable background and environment lighting. 3. Animation preview for GLB, GLTF, FBX and more formats. 4. Real-time shadow casting. 5. Local & cloud document management (iCloud, DropBox, etc.). 6. Set custom rotation pivot point for model viewing. 7. Exploded view function to separate assembly parts. 8. Wide format support: STP, STEP, BERP, IGES, 3DS, OBJ, GLB, GLTF, STL, SLC, 3MF, PLY, OFF, DAE, Blend, FBX, USDZ, MD2, MD3, MD5, MDL, MS3D, DXF, X Read packaged archives containing models, MTL files and textures: ZIP, RAR. 9. Multiple import ways: iTunes File Sharing, AirDrop, iCloud, email attachments, web download. 10. File sharing via AirDrop or Email. 11. Capture, share and save screenshots. 12. Auto rotation and full-screen viewing mode. 13. Display model metrics: dimensions, volume, surface area, vertex count and triangle count. 14. Folder management in the file browser. If you have any suggestions or questions, please email belighten@gmail.com. Thank you for your support!
CADDaddy
Read full descriptionHide full description
CADDaddy is a fast, native 3D CAD viewer for iPhone and iPad. Open STEP, DWG, DXF, FBX, 3MF, PLY, STL, IGES and OBJ files in seconds — no account required, no subscription, no features locked behind a second paywall. Built natively for Apple Silicon, CADDaddy renders complex assemblies smoothly using Metal. Every part keeps its colour. Every gesture works the way you'd expect on iPhone and iPad. WHAT YOU CAN DO - Open files from Files, Mail, AirDrop, or any share sheet - View assemblies in full colour where each part renders individually - Switch between shaded, wireframe, and solid display modes - Toggle between perspective and orthographic projection - Slice through any model with section planes on X, Y and Z axes - Measure point-to-point distances with vertex snapping - Export to STL, GLB or USDZ - View any USDZ export in AR — place a model on your desk and walk around it WORKS THE WAY AN iOS APP SHOULD Native touch gestures. One-finger orbit, two-finger pan, pinch to zoom. Every control is built for thumbs and fingers, not retrofitted from a desktop UI. VIEW IN AR Tap to send any model to AR Quick Look. See your part at full scale on the floor, on your desk, in your workshop wherever you need to check it before you commit. ONE PURCHASE. THREE PLATFORMS. Buy once and CADDaddy unlocks on iPhone, iPad and Mac. No account, no cloud sync, no analytics — your files stay on your device. WHO IT'S FOR Engineers checking geometry on the go. Clients reviewing a design without needing a CAD licence. 3D printing enthusiasts inspecting files before they slice. Machinists verifying a part before they cut. If you've ever tried to open a CAD file on your iPhone and hit a login screen, a subscription prompt, or a crash, CADDaddy is the app you were looking for.
Screenshots
Verdict
The clearest difference is price: 3D Model Viewer at Free against CADDaddy's $12.99. 3D Model Viewer also leads on rating (4.2 vs 1.0) and ratings volume (328 vs 1). CADDaddy's advantage is in-app purchases (none vs 5) and ads (none vs shown). On 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
3D Model Viewer is free to download; CADDaddy costs $12.99 up front. 3D Model Viewer sells 5 one-off in-app purchases. CADDaddy asks for nothing beyond the download.
3D Model Viewer holds the better App Store score, 4.2 against 1.0. That said, the two scores are not equally well evidenced: 3D Model Viewer has 328 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | 3D Model Viewer | CADDaddy |
|---|---|---|
| Price | Free — better | $12.99 |
| Rating | 4.2 (328 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 59.2% of reviews | — |
| Number of ratings | 328 — better | 1 |
| Update frequency | Every 3 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 28 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | 健 钟 | Alan Agon |
Bugs and requests
3D Model Viewer
Reported bugs
3 issues- App crashes when trying to delete models
- Cannot open .3mf and .glb files
- Texture and shading issues with some models
Requested features
4 requests- Add support for more 3D file formats
- Improve model rendering quality
- Implement better file management options
- Provide more customization and control over model view
CADDaddy
Not enough reviews yet to summarise bugs or requests.
In-app purchases
3D Model Viewer
- Remove Ads$1.99
- Model & Screenshot Output$1.99
- Background from Album$1.99
Show 2 moreShow fewer
- Large File Model$1.99
- All Features$5.99
CADDaddy
No in-app purchases
Questions
Is 3D Model Viewer free?
Is CADDaddy free?
Which has better reviews, 3D Model Viewer or CADDaddy?
Do 3D Model Viewer or CADDaddy have ads?
Other comparisons















