Best Cad File Viewer Apps

248+ iOS apps curated and reviewed

3.8 avg rating
18 free apps
Updated August 2026

From beginner-friendly picks to power-user tools, our cad file viewer list covers 248+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.

Compare top Cad File Viewer Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1DWG FastView-CAD Viewer&EditorDWG FastView-CAD Viewer&EditorFree4.5★ (1.1K)YesYesAug 2026
2AutoCADAutoCADFree4.4★ (6.3K)NoYesAug 2026
3CAD FastView: DWG ViewerCAD FastView: DWG ViewerFree4.0★ (50)NoYesAug 2026
4STL Simple ViewerSTL Simple ViewerFree4.3★ (866)YesYesAug 2026
5Glovius - 3D CAD File ViewerGlovius - 3D CAD File ViewerFree1.0★ (1)NoYesJul 2026
6CADDaddy: CAD ViewerCADDaddy: CAD Viewer$12.99 was $19.99NoNoJul 2026
7CAD Converter ViewerCAD Converter ViewerFreeNoYesMay 2026
8STEP File ViewerSTEP File ViewerFree4.0★ (4)NoYesAug 2026

Top Picks for Cad File Viewer

DWG FastView-CAD Viewer&Editor#1

DWG FastView-CAD Viewer&Editor by Gstarsoft Co., Ltd

* Support 2D/3D CAD formats
Editor's Choice
📊 Productivity
4.5😐(1.1K ratings)
FreeAdsIn-App Purchases
DWG FastView-CAD Viewer&Editor screenshot 1
DWG FastView-CAD Viewer&Editor screenshot 2
DWG FastView-CAD Viewer&Editor screenshot 3
DWG FastView-CAD Viewer&Editor screenshot 4
DWG FastView-CAD Viewer&Editor screenshot 5
DWG FastView-CAD Viewer&Editor screenshot 6

This cross-platform CAD application allows users to view, edit, and create 2D and 3D designs on the go. It supports a wide range of file formats and offers advanced tools for precise drawing, measurement, and annotation, even offline.

What We Love

  • 🚀 Fast and efficient
  • 👍 Easy to use and intuitive
  • 💡 Convenient mobile CAD viewing and editing
  • 🚀 Quick file loading

Room to Improve

  • 🐛 Crashes and freezes
  • 💰 Subscription model with limited free features
  • 🔒 Lack of customer support and communication
AutoCAD#2

AutoCAD by Autodesk Inc.

DWG Viewer & Editor
Strong Contender
📊 Productivity
4.4😞(6.3K ratings)
FreeIn-App Purchases
AutoCAD screenshot 1
AutoCAD screenshot 2
AutoCAD screenshot 3
AutoCAD screenshot 4
AutoCAD screenshot 5
AutoCAD screenshot 6

Access and edit CAD drawings on the go with this official application. It provides essential drafting and design tools for creating, updating, and sharing 2D drawings from any device. Collaborate with teams and simplify workflows by accessing files from various cloud storage services.

What We Love

  • 🚀 Intuitive and easy to learn
  • 📱 Convenient mobile solution
  • 👍 Great for site visits and field work
  • 🔍 Useful for viewing and marking up drawings

Room to Improve

  • 🐛 Crashes frequently
  • 🔒 Difficult login and account management
  • 🔍 Limited functionality compared to desktop version
CAD FastView: DWG Viewer#3

CAD FastView: DWG Viewer by 镇源 余

DWG,DXF,DWT Viewer -CAD viewer
Worth Considering
📊 Productivity
4.0(50 ratings)
FreeIn-App Purchases
CAD FastView: DWG Viewer screenshot 1
CAD FastView: DWG Viewer screenshot 2
CAD FastView: DWG Viewer screenshot 3
CAD FastView: DWG Viewer screenshot 4

View, convert, and print CAD drawings on your mobile device. Supports DWG, DXF, and PDF formats with iCloud sync and Wi-Fi printing. Ideal for architects, engineers, and construction professionals.

More Cad File Viewer apps to explore

4
STL Simple Viewer
STL Simple Viewer
STL Simple Viewer
View 3D STL & 3MF CAD models
Free

Easily view and interact with 3D STL CAD models. Supports various file types and offers advanced rendering options for detailed analysis. Get model information and explore interiors with clipping planes.

View ASCII and Binary STL filesLoad STL from ZIPRotate, pan, and zoom
📊 Productivity
(866)
free with in-app purchases
5
Glovius - 3D CAD File Viewer
Glovius - 3D CAD File Viewer
Glovius - 3D CAD File Viewer
View CAD files on iPhone, iPad
Free

View, analyze, and collaborate on 3D CAD files directly from your mobile device. Supports numerous popular CAD formats and offers tools for measurements, reporting, and team feedback.

View 3D CAD parts and assembliesSupport for numerous CAD file formatsOffline viewing of downloaded files
🔧 Utilities
(1)
subscription
6
CADDaddy: CAD Viewer
CADDaddy: CAD Viewer
CADDaddy: CAD Viewer
Open almost any CAD file
$12.99
$19.99 | 35% OFF
📊 Productivity
(0)
7
CAD Converter Viewer
CAD Converter Viewer
CAD Converter Viewer
CAD to PDF & Image Converter
Free
🎨 Graphics & Design
(0)
8
STEP File Viewer
STEP File Viewer
STEP File Viewer
View & Explore STEP/IGES
Free

View and interact with 3D CAD files like STEP and IGES. Inspect internal geometry, measure dimensions, and export models in various formats. Ideal for engineers, designers, and students needing to visualize complex designs without expensive software.

3D model viewing with pan, zoom, and rotateSolid, shaded, and wireframe display modesMeasure dimensions and features
🛠️ Developer Tools
(4)
free with in-app purchases
9
DWG Reader Converter PDF CAD
DWG Reader Converter PDF CAD
DWG Reader Converter PDF CAD
DWG File Reader Convert CAD
Free

Easily view, convert, and share DWG files with this comprehensive tool. Supports multiple output formats like PDF, CAD, and images. Offers batch processing and custom conversion settings for efficient workflow.

Multi-format DWG conversion (PDF, CAD, SVG, JPEG, PNG, TIFF)High-quality DWG viewing with zoom, pan, rotate, and layer managementBatch processing for multiple file conversions
🔧 Utilities
(17)
free with in-app purchases
10
STL & 3D Model Viewer - Mes3D
STL & 3D Model Viewer - Mes3D
STL & 3D Model Viewer - Mes3D
Supports STEP, GLB, OBJ, glTF
Free

Easily view, inspect, and explore 3D models on your device. Supports common file formats and offers intuitive touch controls for rotation, panning, and zooming. Visualize models in AR and capture snapshots for sharing.

Import 3D files (STL, GLB, OBJ, USDZ, etc.)Intuitive touch controls for rotation, pan, zoomMesh-based preview and rendering
🛠️ Developer Tools
(7)
free
11
STEP Viewer
STEP Viewer
STEP Viewer
Fast STEP File Viewer
Free
📊 Productivity
(0)
12
DXF Viewer: CAD File Reader
DXF Viewer: CAD File Reader
DXF Viewer: CAD File Reader
Open & View DXF Drawings
Free
$4.99 | 100% OFF
🔧 Utilities
(0)
13
STP Viewer : STEP 3D
STP Viewer : STEP 3D
STP Viewer : STEP 3D
3D CAD File Reader & Opener
Free
🔧 Utilities
(0)
14
CAD Viewer Editor
CAD Viewer Editor
CAD Viewer Editor
DWG & DXF Drawings: View, Edit
Free
🎨 Graphics & Design
(0)
15
CAD看图 - dwg viewer
CAD看图 - dwg viewer
CAD看图 - dwg viewer
by 玲娟 干
Free
📊 Productivity
(0)
16
DWG FastView Pro-CAD viewer
DWG FastView Pro-CAD viewer
DWG FastView Pro-CAD viewer
Fully compatible with AutoCAD
$9.99

This application allows users to view and edit 2D/3D CAD drawings in DWG and DXF formats. It offers free creation, browsing, and editing capabilities without requiring registration or an internet connection for local files. Users can also export drawings to PDF and image formats for easy sharing.

View and edit 2D/3D DWG/DXF filesFree drawing creation and browsingNo registration or internet required for local files
📊 Productivity
(16)
free
17
SnapCAD Viewer
SnapCAD Viewer
SnapCAD Viewer
Lightweight DWG/DXF Viewer
Free
📊 Productivity
(0)
18
ViewCAD:2D/3D CAD Model Viewer
ViewCAD:2D/3D CAD Model Viewer
ViewCAD:2D/3D CAD Model Viewer
View CAD Models Anywhere
Free
📊 Productivity
(0)
19
Autodesk Fusion
Autodesk Fusion
Autodesk Fusion
by Autodesk Inc.
Free

Collaborate on 3D designs from anywhere with this mobile app. View, comment on, and share CAD models in over 100 formats. It works with a companion cloud-based desktop product for product design and development.

View over 100 file formatsCollaborate on 3D designsComment on project activities
📊 Productivity
(4.1K)
free
20
CAD FastView: DWG & DXF Viewer
CAD FastView: DWG & DXF Viewer
CAD FastView: DWG & DXF Viewer
by 峰 蔺
Free
📊 Productivity
(0)

FAQ about Cad File Viewer

What are the best cad file viewer apps for iPhone?
DWG FastView-CAD Viewer&Editor tops our cad file viewer apps ranking as of August 2026, with a 4.5-star average from 1.1K App Store ratings, and it's free to download.
Yes — 18 of the top cad file viewer apps we rank are free to download, including DWG FastView-CAD Viewer&Editor and AutoCAD.
DWG FastView-CAD Viewer&Editor shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 248+ cad file viewer apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
DWG FastView allows you to view, edit, and create 2D and 3D CAD drawings. You can perform actions like moving, copying, rotating, scaling, measuring, and annotating objects. It also supports exporting drawings to various image formats and PDF.
The app is fully compatible with AutoCAD formats like DWG and DXF. It also supports browsing over 40 formats of 3D drawings, including BIM, Revit, Solidworks, NX, CATIA, Inventor, and more.

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