Best Stp File Viewer Apps

214+ iOS apps curated and reviewed

4.0 avg rating
17 free apps
Updated June 2026

Out of 214+ stp file viewer apps on iOS, 17 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Stp File Viewer

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

More Stp File Viewer apps to explore

4
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)
5
Zip & RAR File Extractor
Zip & RAR File Extractor
Zip & RAR File Extractor
UnZip Browser, Viewer, Manager
Free

Zip is a mobile application that helps users easily compress and extract files on the go. Say goodbye to bulky file sizes with Zip - your ultimate file management tool!

🔧 Utilities
(28K)
6
Glovius - 3D CAD File Viewer
Glovius - 3D CAD File Viewer
Glovius - 3D CAD File Viewer
View CAD files on iPhone, iPad
Free

This application allows users to view, analyze, and collaborate on 3D CAD files on their iPhone or iPad, supporting various file formats. With this app, users can view and interact with 3D models, take measurements, run reports, and share feedback with their team, making it a perfect tool for on-the-go collaboration and design review.

🔧 Utilities
(1)
7
GoodReader PDF Editor & Viewer
GoodReader PDF Editor & Viewer
GoodReader PDF Editor & Viewer
PDF Annotator, File Manager
$5.99

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.

📊 Productivity
(14K)
8
STEP File Viewer
STEP File Viewer
STEP File Viewer
View & Explore STEP/IGES
Free
🛠️ Developer Tools
(1)
9
FileBrowser: Documents Manager
FileBrowser: Documents Manager
FileBrowser: Documents Manager
File Explorer & Media Player
$7.99

FileBrowser is a powerful documents manager that allows you to organize and navigate files efficiently. Simplify your file management experience today!

🔧 Utilities
(5.6K)
10
Viewra CAD
Viewra CAD
Viewra CAD
Your next CAD file viewer
Free
🔧 Utilities
(0)
11
FE File Explorer Pro
FE File Explorer Pro
FE File Explorer Pro
Access files on computer & NAS
$4.99

Access and manage files on your computer from your mobile device. Organize, transfer, and view files seamlessly with easy-to-use functionality. Explore a new way to handle your files on the go!

🔧 Utilities
(5.8K)
12
STL File Viewer Pro
STL File Viewer Pro
STL File Viewer Pro
Simplest Way To View STL Files
Free

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.

🛠️ Developer Tools
(50)
13
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)
14
File Manager & File Viewer
File Manager & File Viewer
File Manager & File Viewer
File Utility & File Tools
Free

This file utility application allows users to efficiently manage and view various types of files on their iPhone, iPod touch, and iPad, with features such as file browsing, sharing, and editing. With this tool, users can easily browse, copy, paste, rename, and move files, as well as share them via email or iTunes.

🔧 Utilities
(9)
15
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)
16
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)
17
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)
18
myTextViewer
myTextViewer
myTextViewer
Any File Viewer: Code/Log/Text
Free

Easily view any text files with myTextViewer! Open and read text files in various formats quickly and easily. Simply select the file and use the Share option to open it in myTextViewer.

📊 Productivity
(146)
19
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)
20
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)