Comparison

3D Model Viewer vs Sketch Viewer UP

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

Head to head
About

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.

Highlights
  • 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
Features
Read 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!

About

Sketch Viewer UP

This application allows users to import and view 3D models from various professional design software. It supports a wide range of file formats, making it convenient for designers, engineers, and students to access and analyze 3D drawings on their mobile devices.

Highlights
  • Import and view 3D drawings
  • Supports multiple professional 3D file formats
  • Collection of standard industry libraries
  • Mobile 3D viewing software
  • Professional CAD drawing and modeling
Features
Read full description

A professional 3D model browsing and viewing tool Designed for designers, artists, teachers, students, engineers, and those involved in engineering drawing, suitable for various professional scenarios in multiple industries. It comes with a vast library of industry-standard models and supports the import and viewing of various 3D drawings, with efficient and convenient operations. 1. Professional software for designers, artists, scholars, students, teachers, engineering drafters, and engineers 2. Comprehensive standard libraries for all industries 3. Supports importing and viewing 3D drawings, quick and convenient. 4. Supports multiple formats, including SKP, SolidWorks, ProE/Creo, sview, CATIA, Fbx, Ifc, Inventor, JT, Parasolid, PDMS, Rhino, U3D, UG, CGR, Maya, LightWave (mainstream formats), parsing and browsing dae, max, 3ds, obj, ABC, FBX, DAE, OBJ, BVH, DXF, PSK, STL, PLY, X3D, JCD, svp. At the same time, SU supports mobile 3D viewing software, professional CAD viewing, drawing, modeling! Privacy Policy: https://kdocs.cn/l/coraO45x7Hrz User Agreement: https://kdocs.cn/l/ciYVcrmHDELu

Screenshots

3D Model Viewer3 screens
Sketch Viewer UP4 screens

Verdict

The call

The clearest difference is review sentiment: 3D Model Viewer at 59% against Sketch Viewer UP's 0%. 3D Model Viewer also leads on rating (4.2 vs 1.6) and ratings volume (328 vs 10). Sketch Viewer UP's advantage is ads (none vs shown) and update cadence (every 8 days vs every 3 weeks). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 3D Model Viewer sells 5 one-off in-app purchases and Sketch Viewer UP sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

3D Model Viewer holds the better App Store score, 4.2 against 1.6. That said, the two scores are not equally well evidenced: 3D Model Viewer has 328 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 59% of 3D Model Viewer's written reviews are positive against 0% of Sketch Viewer UP's.

UpkeepUpdate frequency

3D Model Viewer ships an update every 3 weeks, Sketch Viewer UP every 8 days. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
3D Model Viewer versus Sketch Viewer UP: the parameters behind the verdict, then further details
Parameter3D Model ViewerSketch Viewer UP
PriceFreeFree
Rating4.2 (328 ratings) — better1.6 (10 ratings)
Positive reviews59.2% of reviews — better0.0% of reviews
Number of ratings328 — better10
Update frequencyEvery 3 weeksEvery 8 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size28 MB40 MB
Age rating4+17+
Developer健 钟骁宇 陈

Customer experience

3D Model Viewer

All ratings328 ratings
Positive78.7%
Neutral2.7%
Negative18.6%
Written reviews103 reviews
Positive59.2%
Neutral3.9%
Negative36.9%

Sketch Viewer UP

All ratings10 ratings
Positive10.0%
Neutral10.0%
Negative80.0%
Written reviews8 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Sketch Viewer UP

Not enough reviews yet to summarise bugs or requests.

In-app purchases

5 purchases

3D Model Viewer

One-time5
  • Remove Ads$1.99
  • Model & Screenshot Output$1.99
  • Background from Album$1.99
Show 2 more
  • Large File Model$1.99
  • All Features$5.99
3 purchases

Sketch Viewer UP

One-time3
  • 一季度会员$9.99
  • 一年会员$24.99
  • 永久会员$29.99

Questions

Is 3D Model Viewer free?
3D Model Viewer is free to download, with in-app purchases available.
Is Sketch Viewer UP free?
Sketch Viewer UP is free to download, with in-app purchases available.
Which has better reviews, 3D Model Viewer or Sketch Viewer UP?
3D Model Viewer is rated higher. 3D Model Viewer averages 4.2 out of 5 from 328 ratings, while Sketch Viewer UP averages 1.6 from 10 ratings.
Do 3D Model Viewer or Sketch Viewer UP have ads?
3D Model Viewer shows ads; Sketch Viewer UP does not.
Which is updated more often, 3D Model Viewer or Sketch Viewer UP?
3D Model Viewer ships an update every 3 weeks, and Sketch Viewer UP every 8 days. Most recently, 3D Model Viewer was updated on October 24, 2026 and Sketch Viewer UP on October 24, 2026.

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