Best Design File Viewer Apps

0+ iOS apps curated and reviewed

4.2 avg rating
18 free apps
Updated June 2026

Whether you're new to design file viewer or looking for an upgrade, our curated collection of 0+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Top Picks for Design File Viewer

STL File Viewer Pro#1

STL File Viewer Pro by Andeesh Mehdi Syed

Simplest Way To View STL Files
Editor's Choice
🛠️ Developer Tools
4.4(50 ratings)
FreeAdsIn-App Purchases
#32in Developer Tools
STL File Viewer Pro screenshot 1
STL File Viewer Pro screenshot 2
STL File Viewer Pro screenshot 3

View and interact with your 3D STL models with ease, rotating, zooming, and inspecting them with smooth and intuitive gestures. Download now to explore your 3D models in a comfortable and efficient way, perfect for 3D printing, CAD modeling, and more.

DWG FastView-CAD Viewer&Editor#2

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

* Support 2D/3D CAD formats
Strong Contender
📊 Productivity
3.7😐(50 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

DWG FastView-CAD Viewer allows users to view, edit, and share CAD drawings on mobile devices with ease. This intuitive app enables quick access to important design files anytime, anywhere. Access professional-grade features on-the-go and streamline your CAD workflow today.

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
GoodReader PDF Editor & Viewer#3

GoodReader PDF Editor & Viewer by Good.iWare, Inc.

PDF Annotator, File Manager
Worth Considering
📊 Productivity
4.7😊(14K ratings)
$5.99In-App Purchases
#24in Productivity
GoodReader PDF Editor & Viewer screenshot 1
GoodReader PDF Editor & Viewer screenshot 2
GoodReader PDF Editor & Viewer screenshot 3

A versatile PDF editing application that allows users to annotate, organize, and edit PDF documents seamlessly on all devices with advanced features for productivity. Try it now and streamline your document management tasks effortlessly.

What We Love

  • 🚀 Excellent for reading and annotating PDFs
  • 📚 Powerful file management and organization
  • 💻 Seamless integration with cloud storage
  • 🎨 Customizable reading experience

Room to Improve

  • 🔒 Subscription model for some features
  • 🔀 Cluttered interface after recent update
  • 🐛 Occasional crashes and stability issues

More Design File Viewer apps to explore

4
Winmail Viewer - Letter Opener
Winmail Viewer - Letter Opener
Winmail Viewer - Letter Opener
Open Email, MSG & XPS files
Free

View and manage email attachments with ease using this application. Say goodbye to compatibility issues with various file formats and streamline your email attachment viewing experience. Try it now for a hassle-free email management solution.

🔧 Utilities
(4.5K)
5
AutoCAD
AutoCAD
AutoCAD
DWG Viewer & Editor
Free

View and edit AutoCAD drawings on the go! Access all DWG files, annotate, measure, and share designs easily. Download now to streamline your workflow.

📊 Productivity
(6.3K)
6
File Viewer
File Viewer
File Viewer
by Sharpened Productions
Free

View and open over 100 file types with this easy-to-use file viewer, including PDFs, Office documents, images, videos, and more. Browse files on your device or iCloud Drive and access advanced features like bookmarking, file identification, and metadata extraction.

🔧 Utilities
(3)
7
CDR File Viewer Offline
CDR File Viewer Offline
CDR File Viewer Offline
View CorelDRAW Files
Free

This application allows users to view CorelDRAW files offline, with the ability to zoom up to 100x, and provides a simple interface for easy operation. It enables users to open and view CDR files locally on their device, without the need for uploading or downloading, and with future updates planned for file conversion.

🎨 Graphics & Design
(4)
8
File Viewer for All
File Viewer for All
File Viewer for All
Waterfall image&video browser
Free

This application allows users to view almost all types of files in a single app with a waterfall layout and transfer files between devices freely. With its built-in file server and sharing functions, users can easily upload, download, and manage files, making it a versatile tool for file management.

🔧 Utilities
(6)
9
RAR Unzip-Zip File Opener 7Zip
RAR Unzip-Zip File Opener 7Zip
RAR Unzip-Zip File Opener 7Zip
Zip Extractor & RAR Extractor
Free

Discover new recipes, plan your meals, and organize your grocery list with this all-in-one cooking companion. From browsing diverse dishes to creating customized meal plans, simplify your kitchen experience today!

🔧 Utilities
(2.8K)
10
My File Organizer
My File Organizer
My File Organizer
Organize Files & Documents
Free

Efficiently organize all your files based on type, date, and size with this user-friendly application. Simplify your digital life today!

🔧 Utilities
(6.5K)
11
Illustrator File Viewer: .AI
Illustrator File Viewer: .AI
Illustrator File Viewer: .AI
Open & Measure .ai Files
Free
📊 Productivity
(0)
12
Browser & File Manager
Browser & File Manager
Browser & File Manager
by 书穗 林
Free

Discover a cutting-edge browsing experience with an innovative application that offers seamless navigation, robust security features, and customizable settings. Take your online exploration to the next level with our revolutionary browsing solution. Experience it for yourself today!

🔧 Utilities
(301)
13
STL Simple Viewer
STL Simple Viewer
STL Simple Viewer
Quickly view 3D STL CAD models
Free

View 3D STL CAD models with ease using our app. Features include support for both ASCII and Binary STL files, graphic operations for manipulation, and rendering options for detailed viewing. Contact us at support@boviosoft.com for more information.

📊 Productivity
(721)
14
Zip File Viewer
Zip File Viewer
Zip File Viewer
by BYTO
Free

This application allows users to open and view zip files without needing to unzip them. Users can also transfer files from computers to their iPhones, manage files easily, and view various file formats such as MP3, PDF, JPG, and more with a simple interface.

🔧 Utilities
(5)
15
Html Preview - Web File Viewer
Html Preview - Web File Viewer
Html Preview - Web File Viewer
Open & Render Pages Instantly
$2.99
🔧 Utilities
(1)
16
ES File Explorer
ES File Explorer
ES File Explorer
Browse & Music, Docs
Free

Discover a comprehensive file management tool with powerful features for browsing, managing, and organizing files on your device efficiently. Download now to streamline your file management tasks with ease.

📊 Productivity
(15K)
17
3D File Viewer: OBJ STP & more
3D File Viewer: OBJ STP & more
3D File Viewer: OBJ STP & more
STP STL OBJ FBX GLTF & More
Free

View 3D models on your iPhone or iPad with support for over 20 popular file formats, including STL, OBJ, FBX, and more. Download to explore your 3D files anytime, anywhere.

🔧 Utilities
(35)
18
WinZip: #1 zip & unzip tool
WinZip: #1 zip & unzip tool
WinZip: #1 zip & unzip tool
Professional Zip File Manager
Free

Compress and extract files quickly and efficiently with this application. Easily manage and organize your data with its user-friendly interface.

🔧 Utilities
(2.3K)
19
My Files - Manager & Viewer
My Files - Manager & Viewer
My Files - Manager & Viewer
File Manager & File Viewer
Free

This file management tool allows users to organize and view various file types, including documents, images, and media, with features like copying, pasting, renaming, and sharing files. With this app, users can easily manage and access their files on-the-go and share them via email attachments.

🔧 Utilities
(30)
20
iRAR - zip,rar,7z file opener
iRAR - zip,rar,7z file opener
iRAR - zip,rar,7z file opener
Unzip archives viewer,archiver
Free

Unzip, view, and create archives in various formats with a powerful archiver app. Support for decompressing multiple file types, creating encrypted files, viewing various document and media formats, and transferring files securely via WiFi. Lock files with a passcode and Touch ID for added security.

🔧 Utilities
(4K)