Comparison

Viewport 3D vs Model Viewer | CAD Viewer

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

Head to head
About

Viewport 3D

This app allows artists to quickly open and inspect 3D models from various cloud storage services and local files. It offers professional viewing tools, animation playback, and augmented reality capabilities, all processed on-device for privacy.

Highlights
  • Open 3D models from cloud storage
  • Supports over 20+ 3D file formats
  • Professional inspection tools
  • Animation playback
  • Augmented Reality (AR) mode
  • On-device processing for privacy
Read full description

Viewport is a fast, focused 3D viewer built for artists. Open models straight from the Files app on iPhone or iPad — iCloud Drive, Google Drive, Dropbox, OneDrive, Downloads or AirDrop — and inspect them in a clean, professional viewport. No account. No cloud. No clutter. OPEN ALMOST ANYTHING • USD family + Reality load natively: USDZ, USD, USDA, USDC, .reality • OBJ, STL and PLY • FBX, glTF, GLB, DAE and 20+ more formats via an in-app importer • Pick a model and its texture files together to keep materials INSPECT LIKE A PRO • Smooth orbit, pan, pinch-zoom and double-tap to frame • Studio lighting presets + intensity, multiple backgrounds (studio, blueprint, gradient, checker…) • Render channels: shaded, albedo, normals, roughness and UVs • Turntable auto-spin and a reference ground grid • Scene info: bounding box, dimensions, vertex/triangle/material/texture counts — real values, never faked ANIMATION • Plays node/transform animation and skeletal (bone) skinning on supported models • Simple play / pause / loop transport AR • Place supported static models on real surfaces • Real World and Studio lighting modes • Stable placement, flexible scaling and grounding shadows MORE • Capture a screenshot and share it • Recent files with search, sorting, date grouping and thumbnails • Adaptive layouts and multitasking support on iPad PRIVACY FIRST All 3D processing happens on your device. Viewport has no accounts, no tracking, no ads, and never uploads your files. Made by Reimagine Fx. More formats and tools coming.

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/

Screenshots

Viewport 3D4 screens
Model Viewer | CAD Viewer2 screens

Verdict

The call

The clearest difference is rating: Model Viewer | CAD Viewer at 5.0 against Viewport 3D's 4.0. Viewport 3D's advantage is in-app purchases (none vs 2). On price, ratings volume, update cadence and ads 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. Viewport 3D asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Model Viewer | CAD Viewer holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. Both last shipped on October 31, 2026.

Scorecard2 real differences · 7 level
Viewport 3D versus Model Viewer | CAD Viewer: the parameters behind the verdict, then further details
ParameterViewport 3DModel Viewer | CAD Viewer
PriceFreeFree
Rating4.0 (2 ratings)5.0 (1 ratings) — better
Number of ratings2 — better1
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size47 MB12 MB
Age rating4+4+
DeveloperAmar ShindeAstonish Innovations

In-app purchases

None

Viewport 3D

No in-app purchases

2 purchases

Model Viewer | CAD Viewer

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

Questions

Is Viewport 3D free?
Viewport 3D is free to download, with no in-app purchases.
Is Model Viewer | CAD Viewer free?
Model Viewer | CAD Viewer is free to download, with in-app purchases available.
Which has better reviews, Viewport 3D or Model Viewer | CAD Viewer?
Model Viewer | CAD Viewer is rated higher. Viewport 3D averages 4.0 out of 5 from 2 ratings, while Model Viewer | CAD Viewer averages 5.0 from 1 ratings.
Do Viewport 3D or Model Viewer | CAD Viewer have ads?
Neither Viewport 3D nor Model Viewer | CAD Viewer shows ads.
Which is updated more often, Viewport 3D or Model Viewer | CAD Viewer?
Viewport 3D ships an update every 2 weeks, and Model Viewer | CAD Viewer every 2 weeks. Most recently, Viewport 3D was updated on October 31, 2026 and Model Viewer | CAD Viewer on October 31, 2026.

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