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Best Free Cad Viewer Apps

225+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated July 2026

From beginner-friendly picks to power-user tools, our free cad viewer list covers 225+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.

Compare top Free Cad Viewer Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1AutoCADAutoCADFree4.4★ (6.3K)NoYesJul 2026
2DWG FastView-CAD Viewer&EditorDWG FastView-CAD Viewer&EditorFree4.4★ (1K)YesYesJul 2026
3CAD Reader-View & Measure DWGCAD Reader-View & Measure DWGFree4.0★ (22)YesYesJul 2026
4SketchUp - 3D ModelingSketchUp - 3D ModelingFree4.5★ (17K)YesYesJul 2026
5CAD Viewer EditorCAD Viewer EditorFree—NoNoMay 2026
6CAD FastView: DWG ViewerCAD FastView: DWG ViewerFree3.9★ (33)NoYesJul 2026
7Viewra STEPViewra STEPFree—NoYesJul 2026
8SnapCAD ViewerSnapCAD ViewerFree—YesYesMay 2026

Top Picks for Free Cad Viewer

AutoCAD#1

AutoCAD by Autodesk

DWG Viewer & Editor
Editor's Choice
📊 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
DWG FastView-CAD Viewer&Editor#2

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

* Support 2D/3D CAD formats
Strong Contender
📊 Productivity
4.4😐(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

More Free Cad Viewer apps to explore

4
SketchUp - 3D Modeling
SketchUp - 3D Modeling
SketchUp - 3D Modeling
Interior Design & Architecture
Free

This platform offers intuitive 3D modeling tools for design enthusiasts and professionals. Visualize concepts, create photorealistic visuals, and even use AI to generate design ideas. Scan real-world spaces and view your creations in augmented reality.

3D modeling toolsGenerative AI designsRoom planner & space design
🎨 Graphics & Design
(17K)
free with in-app purchases
5
CAD Viewer Editor
CAD Viewer Editor
CAD Viewer Editor
DWG & DXF Drawings: View, Edit
Free
🎨 Graphics & Design
(0)
6
CAD FastView: DWG Viewer
CAD FastView: DWG Viewer
CAD FastView: DWG Viewer
DWG Viewer - DWG/DXF Reader
Free

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.

Fast DWG/DXF viewingConvert drawings to PDFWi-Fi printing
📊 Productivity
(33)
freemium
7
Viewra STEP
Viewra STEP
Viewra STEP
Your next CAD file viewer
Free
🔧 Utilities
(0)
8
SnapCAD Viewer
SnapCAD Viewer
SnapCAD Viewer
Lightweight DWG/DXF Viewer
Free
📊 Productivity
(0)
9
STL Simple Viewer
STL Simple Viewer
STL Simple Viewer
Quickly view 3D STL 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
(847)
free with in-app purchases
10
Autodesk Fusion
Autodesk Fusion
Autodesk Fusion
by Autodesk
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
11
ARES Touch: DWG Viewer & CAD
ARES Touch: DWG Viewer & CAD
ARES Touch: DWG Viewer & CAD
Read, Modify & Annotate in DWG
Free

This CAD software allows professionals to view, create, annotate, and modify DWG drawings on mobile devices. Free users can access viewing and basic annotation tools, while subscribers unlock hundreds of advanced creation and editing features.

View, create, and modify DWG drawingsAnnotate with text, dimensions, and revision cloudsSynchronize files with cloud storage
📊 Productivity
(143)
free with in-app purchases
12
ArcSite: Floor Plans and CAD
ArcSite: Floor Plans and CAD
ArcSite: Floor Plans and CAD
Sketch, Draw & Remodel On-Site
Free

This app allows contractors to create accurate floor plans and site layouts directly on-site. It streamlines the process of planning remodels, running takeoffs, generating professional proposals, and collecting payments, all from a mobile device.

Sketch accurate floor plans on-sitePlan remodels and renovationsRun takeoff and generate material lists
📊 Productivity
(8.6K)
free with in-app purchases
13
ZWCAD Mobile - Mobile CAD
ZWCAD Mobile - Mobile CAD
ZWCAD Mobile - Mobile CAD
DWG viewer and editor
Free

This application allows users to view, edit, and share CAD drawings on their mobile devices. It supports multiple file formats, offers precise measurement tools, and includes a wide range of editing and drawing functions. It's designed for professionals in architecture, engineering, and construction.

View and edit DWG filesSupports DWF, DXF, PDF formatsPrecise measurement tools
📊 Productivity
(303)
free with in-app purchases
14
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)
15
CAD FastView: DWG & DXF Viewer
CAD FastView: DWG & DXF Viewer
CAD FastView: DWG & DXF Viewer
by 峰 蔺
Free
📊 Productivity
(0)
16
3D CAD Model Viewer
3D CAD Model Viewer
3D CAD Model Viewer
by Machine Research Corporation
Free

Easily view, analyze, and share 3D CAD models and drawings from various file formats. Organize your models into a catalog for quick reference and access job information. Streamline your quoting process by leveraging past projects and profitability data.

View models from any angleApply bounding box for measurementsMarkup and annotate models
💼 Business
(13)
free
17
KiCad Viewer
KiCad Viewer
KiCad Viewer
Your soldering companion
Free
📊 Productivity
(0)
18
Wonder CAD - DWG Editor
Wonder CAD - DWG Editor
Wonder CAD - DWG Editor
DWG Viewer & Editor
Free

This application transforms your mobile device into a powerful CAD workstation. Access, edit, and manage your designs with precision tools, secure sharing options, and seamless file management. Work offline and collaborate effortlessly.

Seamless project importPrecision viewing and editingAdd watermark for secure sharing
🔧 Utilities
(7)
freemium
19
iRhino 3D
iRhino 3D
iRhino 3D
3D Viewer & Scanner
Free

View and present 3D models from Rhino 3D on your iPhone or iPad. Navigate models with intuitive touch gestures, load files from various sources, and visualize them in augmented reality. Includes a markup tool for annotations.

3D model viewingTouch navigation (pan, zoom, orbit)Cloud storage integration
📊 Productivity
(72)
free
20
Planner 5D: AI Home Design
Planner 5D: AI Home Design
Planner 5D: AI Home Design
3D House Interior & Room Decor
Free

Design your dream home with this AI-powered interior design and room planner. Create 2D and 3D floor plans, furnish spaces with thousands of items, and generate realistic images of your future home. Perfect for both beginners and design enthusiasts.

AI-powered home design generation2D and 3D floor plan creationExtensive catalog of 8,400+ furniture and decor items
🌟 Lifestyle
(39K)
free with in-app purchases

FAQ about Free Cad Viewer

What are the best free cad viewer apps for iPhone?
AutoCAD tops our free cad viewer apps ranking as of July 2026, with a 4.4-star average from 6.3K App Store ratings, and it's free to download.
AutoCAD has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 225+ free cad viewer apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
The official AutoCAD mobile app allows you to view and edit CAD drawings (DWG files) anytime, anywhere. It provides essential drafting and design capabilities for everyday needs, enabling you to access, create, and update drawings directly from your mobile device.
Key features include 2D file viewing, creating and editing 2D drawings, working offline with later syncing, inserting blocks, managing layers, drafting and geometry editing tools, annotation and markup tools, and measurement tools for distance, angle, area, and radius.