Comparison

Model Viewer | CAD Viewer vs Kuu3D

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

Head to head
About

Model Viewer | CAD Viewer

View and inspect 3D model files with ease. Import various formats, manipulate the view with intuitive controls, and access basic model information on a clear workspace.

Highlights
  • 3D model inspection
  • Import multiple file formats
  • Rotate, pan, and zoom controls
  • Toggle grid workspace
  • View basic model details
Features
Read full description

Model Viewer is an app for opening and inspecting 3D model files on a clean grid workspace. Import supported files from Files, rotate, pan, zoom, reset the view, toggle the grid, and review basic model details. Supported formats include STL, GLB, GLTF, USD, USDA, USDC, USDZ, OBJ, PLY, DAE, ABC, and SCN. MODEL VIEWER PRO Viewing models is free. Model Viewer Pro unlocks rendered, mesh wireframe, edges, and X-ray modes, clipping planes, studio backgrounds and lighting, favorites, folders, and a saved view for every model. Model Viewer Pro is an optional auto-renewable subscription, available monthly or yearly. Payment is charged to your Apple Account when you confirm the purchase. The subscription renews automatically unless it is canceled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. You can manage or cancel your subscription in your Apple Account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://greatminds-create.com/legal/model-viewer/privacy/

About

Kuu3D

Read full description

3D data, beautifully and clearly. Kuu3D is a 3D viewer for iPhone and iPad. It supports USDZ, OBJ, STL, glTF / GLB and PLY (point cloud). Open files from the Files app, AirDrop, or the Share sheet of other apps. EASY TO LOOK AT Operate with your fingertips. Rotate with one finger, pan and zoom with two, twist two fingers to tilt, double-tap to show the whole model. Switch between softly shaded MatCap materials to study the form itself. Sky, dusk, night, or sakura: choose a background to suit your mood and your data. Wireframe view to check the flow of the mesh. Drag the circle on screen to change the light direction freely. Change the field of view to adjust perspective. Turntable mode slowly rotates the model so you can take it all in. Grab the toolbar and move it to the top of the screen if you like. HANDY FOR CHECKING See dimensions. The unit is guessed from the file format and can be changed. Get notified when a model's face directions (normals) look reversed. Large files are displayed as smoothly as possible. SIMPLE AND PRIVATE Save your favorite files in the library. No network access. Your files never leave the device, and no personal data is collected. Almost every feature is free. The one-time purchase "Unlock All Features" removes the limits on the turntable (free users get a half turn) and the library size (free users can save 3 files). It is not a subscription. SUPPORTED FORMATS USDZ / USD, OBJ, STL, glTF / GLB, PLY (point cloud) Note: animation playback is not supported.

Screenshots

Model Viewer | CAD Viewer2 screens
Kuu3D2 screens

Verdict

The call

The clearest difference is update cadence: Kuu3D at weekly against Model Viewer | CAD Viewer's every 2 weeks. On price, ads, in-app purchases 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. Model Viewer | CAD Viewer sells 2 in-app purchases, starting at $1.99 per month and Kuu3D sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Model Viewer | CAD Viewer ships an update every 2 weeks, Kuu3D weekly. Both last shipped on October 31, 2026.

Scorecard1 real difference · 8 level
Model Viewer | CAD Viewer versus Kuu3D: the parameters behind the verdict, then further details
ParameterModel Viewer | CAD ViewerKuu3D
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size12 MB14 MB
Age rating4+4+
DeveloperAstonish InnovationsHirofumi Tanjo

In-app purchases

2 purchases

Model Viewer | CAD Viewer

Subscriptions2
  • Model Viewer Pro Monthly$1.991 Month
  • Model Viewer Pro Yearly$19.991 Year
1 purchases

Kuu3D

One-time1
  • Unlock All Features$4.99

Questions

Is Model Viewer | CAD Viewer free?
Model Viewer | CAD Viewer is free to download, with in-app purchases available.
Is Kuu3D free?
Kuu3D is free to download, with in-app purchases available.
Do Model Viewer | CAD Viewer or Kuu3D have ads?
Neither Model Viewer | CAD Viewer nor Kuu3D shows ads.
Which is updated more often, Model Viewer | CAD Viewer or Kuu3D?
Model Viewer | CAD Viewer ships an update every 2 weeks, and Kuu3D weekly. Most recently, Model Viewer | CAD Viewer was updated on October 31, 2026 and Kuu3D on October 31, 2026.

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