Best Stl Simple Viewer Apps

170+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated June 2026

Every iPhone needs a few good stl simple viewer apps. We benchmark 170+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Stl Simple Viewer

STL Simple Viewer#1

STL Simple Viewer by Victor Bovio

Quickly view 3D STL CAD models
Editor's Choice
📊 Productivity
4.3😞(847 ratings)
FreeAdsIn-App Purchases
STL Simple Viewer screenshot 1
STL Simple Viewer screenshot 2
STL Simple Viewer screenshot 3
STL Simple Viewer screenshot 4

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.

What We Love

  • 🚀 Simple and intuitive viewer
  • 👍 Useful viewing options
  • 💡 Supports multiple file formats

Room to Improve

  • 🐛 Frequent crashes
  • 🔋 High battery consumption
  • 🚨 Excessive and intrusive ads
STL File Viewer Pro#2

STL File Viewer Pro by Andeesh Mehdi Syed

Simplest Way To View STL Files
Strong Contender
🛠️ Developer Tools
4.4(50 ratings)
FreeAdsIn-App Purchases
#48in Developer Tools
STL File Viewer Pro screenshot 1
STL File Viewer Pro screenshot 2
STL File Viewer Pro screenshot 3

Easily view, rotate, and inspect 3D STL files on your iPhone or iPad. Load models instantly from various sources for 3D printing, design review, or engineering inspection.

STL Master#3

STL Master by JA Logic Labs LLC

STL File Viewer + AR & Sharing
Worth Considering
🔧 Utilities
4.2😐(49 ratings)
Free
STL Master screenshot 1
STL Master screenshot 2
STL Master screenshot 3
STL Master screenshot 4

View and interact with 3D models in augmented reality. Share instant screenshots and screen recordings of your designs directly from the app.

What We Love

  • 🚀 Fast and smooth rendering performance
  • 💰 Completely free with no ads or trackers
  • 🎨 High-quality rendering and visualization
  • 📱 Works well on mobile devices (iPhone, iPad)

Room to Improve

  • 🐛 Frequent crashes and freezing
  • 🖱️ Difficult object manipulation and navigation
  • 🔍 Zoom limitations (hard to zoom out/in)

More Stl Simple Viewer apps to explore

4
Quick STL Viewer
Quick STL Viewer
Quick STL Viewer
by KEAT MEN TANG
Free

Instantly open and preview 3D STL files with a smooth, responsive interface. Explore models by rotating and zooming, switch to wireframe mode, and customize colors for better visibility. This app offers a distraction-free viewing experience for checking models or print details on the go.

Instant STL file openingSmooth 3D model explorationRotate and zoom functionality
🔧 Utilities
(7)
free with in-app purchases
5
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
6
exocad webview
exocad webview
exocad webview
Fast STL 3D Viewer
Free

This free 3D viewer allows you to quickly load and inspect various 3D model file formats on any mobile device. It supports common open formats and offers intuitive controls for adjusting transparency, rotation, and shading. Specialized features are available for dental professionals using specific software.

Load various 3D model formats (STL, OBJ, PLY, etc.)Intuitive touch controlsAdjust mesh transparency and shading
🔧 Utilities
(14)
free
7
3D Model Viewer - AR & Print
3D Model Viewer - AR & Print
3D Model Viewer - AR & Print
Simulate 3D Printing and AR
Free

Explore and interact with 3D models on your mobile device. Simulate the 3D printing process to identify potential issues before committing to a print. Visualize your models in augmented reality, adjusting scale and rotation within your real-world environment.

View 3D models in real-timeRotate, zoom, and paint modelsSimulate 3D printing process
📊 Productivity
(321)
free with in-app purchases
8
3D GO | 3D Printing Models
3D GO | 3D Printing Models
3D GO | 3D Printing Models
Thingiverse Printables Cults3d
Free

This app consolidates 3D model searching, viewing, and slicing from major platforms into a single interface. It allows users to find, preview, organize, and prepare STL files for 3D printing, streamlining the entire workflow.

Search multiple 3D model sitesFull 3D preview and STL viewerBuilt-in 3D slicer with G-code export
🔧 Utilities
(3.8K)
free with in-app purchases
9
DWG FastView-CAD Viewer&Editor
DWG FastView-CAD Viewer&Editor
DWG FastView-CAD Viewer&Editor
* Support 2D/3D CAD formats
Free

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.

View and edit 2D/3D CAD drawingsSupports over 40 3D drawing formatsAccurate measurement and annotation tools
📊 Productivity
(1K)
free with in-app purchases
10
AutoCAD
AutoCAD
AutoCAD
DWG Viewer & Editor
Free

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.

2D file viewingCreate, edit, and share 2D drawingsOffline work and sync
📊 Productivity
(6.3K)
freemium
11
OBJ & MTL Simple Viewer
OBJ & MTL Simple Viewer
OBJ & MTL Simple Viewer
View and export 3D OBJ files
Free

Easily view and export 3D OBJ files with this application. It supports OBJ, MTL, and texture files, and allows for intuitive manipulation like rotating, panning, and zooming. Gain insights into your models with detailed information and customize rendering options for a better viewing experience.

Load OBJ, MTL, and texture filesLoad from ZIP filesRotate, pan, and zoom 3D models
📊 Productivity
(3)
free with in-app purchases
12
Marvel — Design and Prototype
Marvel — Design and Prototype
Marvel — Design and Prototype
Design and Prototype Apps
Free

Bring your app ideas to life quickly by turning sketches and mockups into interactive prototypes. Easily design, link screens, and share your app demos on various devices. Perfect for visualizing and testing new concepts.

Design apps on iPhone/iPadTurn sketches into interactive prototypesLink screens with touch areas
📊 Productivity
(2.6K)
free
13
Winmail Viewer - Letter Opener
Winmail Viewer - Letter Opener
Winmail Viewer - Letter Opener
Open Email, MSG & XPS files
Free

Easily open and view Winmail.dat, MSG, and XPS email files that are incompatible with most email clients. Convert embedded content like appointments and notes into native iOS formats, and access all attachments within these files.

Open Winmail.dat, MSG, and XPS filesConvert appointments, notes, and contactsAccess all attachments
🔧 Utilities
(4.5K)
free with in-app purchases
14
Readme - Text Viewer
Readme - Text Viewer
Readme - Text Viewer
Simple text viewer
Free

This app offers a streamlined experience for viewing text files, removing all extraneous features. It allows quick access to documents from cloud storage services and supports compressed files. Users can customize their reading experience with options for line spacing, themes, font size, and paging animation.

Cloud file downloads (iCloud, Google Drive, Dropbox, OneDrive)iTunes file uploadCompressed file support (zip)
📚 Books
(1.9K)
free with in-app purchases
15
3d Scanner App™
3d Scanner App™
3d Scanner App™
LIDAR Scan in 3d
Free

Transform your device into a powerful 3D scanner using LIDAR or TrueDepth technology. Capture spaces and objects in full-color 3D, edit scans, and share them in various popular formats for professional workflows or personal projects.

LIDAR and TrueDepth scanningFull-color 3D captureMultiple export formats (OBJ, GLTF, STL, etc.)
🔧 Utilities
(15K)
freemium
16
myTextViewer
myTextViewer
myTextViewer
Any File Viewer: Code/Log/Text
Free

Instantly open and view any text, code, or log file. This app offers professional syntax highlighting and line numbers, making it ideal for professionals who need to access and read various file formats on the go. It supports numerous common file types and provides customizable viewing themes.

Open any text, code, or log fileSyntax highlighting for common formatsLine numbers display
📊 Productivity
(146)
free
17
Model View 3D - OBJ viewer
Model View 3D - OBJ viewer
Model View 3D - OBJ viewer
Wavefront OBJ file viewer
Free

View 3D models, including textured OBJ files, with adjustable camera controls. Load your own models via iTunes File Sharing and customize backgrounds for presentations or sharing.

View built-in 3D modelsLoad custom OBJ files via iTunesToggle diffuse, normal, and specular textures
🎬 Entertainment
(12)
free
18
Illustail
Illustail
Illustail
Cross-Platform Media Viewer
Free

This app allows you to view and save images and videos from various social networks and cloud services in one place. It supports multiple accounts, offers a slideshow mode, and includes privacy features like a passcode lock.

Browse multiple social networks and servicesSave media to various cloud storage and local filesManage multiple accounts
🌐 Social Networking
(44)
free with in-app purchases
19
STEP Viewer
STEP Viewer
STEP Viewer
Fast STEP File Viewer
Free
📊 Productivity
(0)
20
Simple Viewer
Simple Viewer
Simple Viewer
The quiet file viewer
Free
🔧 Utilities
(0)