Best Stl File Viewer Apps

194+ iOS apps curated and reviewed

3.9 avg rating
20 free apps
Updated June 2026

Every iPhone needs a few good stl file viewer apps. We benchmark 194+ 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 File Viewer

STL Simple Viewer#1

STL Simple Viewer by Victor Bovio

Quickly view 3D STL CAD models
Editor's Choice
๐Ÿ“Š Productivity
4.3๐Ÿ˜ž(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

  • ๐Ÿš€ Simple and intuitive viewer
  • ๐Ÿ‘ Useful viewing options
  • ๐Ÿ’ก Supports multiple file formats

Room to Improve

  • ๐Ÿ› Frequent crashes
  • ๐Ÿ”‹ High battery consumption
  • ๐Ÿšจ 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
๐Ÿ› ๏ธ Developer Tools
4.4(50 ratings)
FreeAdsIn-App Purchases
#64in 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.

Quick STL Viewer#3

Quick STL Viewer by KEAT MEN TANG

Worth Considering
๐Ÿ”ง Utilities
4.9(7 ratings)
FreeIn-App Purchases
Quick STL Viewer screenshot 1
Quick STL Viewer screenshot 2
Quick STL Viewer screenshot 3
Quick STL Viewer screenshot 4

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.

More Stl File Viewer apps to explore

4
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

Easily open and explore 3D model files on your iPhone or iPad. Supports over 20 popular formats, offering smooth viewing with intuitive touch controls. Ideal for designers, engineers, architects, and students working with 3D data.

Supports over 20 3D file formatsFast and smooth 3D file viewingZoom, rotate, and pan with touch controls
๐Ÿ”ง Utilities
(35)
free with in-app purchases
5
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
๐Ÿ”ง Utilities
(3.8K)
free with in-app purchases
6
STL Master
STL Master
STL Master
STL File Viewer + AR & Sharing
Free

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

STL file viewingAugmented reality (AR) modeInstant screenshots
๐Ÿ”ง Utilities
(49)
free
7
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
๐Ÿ“Š Productivity
(4.1K)
free
8
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
๐Ÿ“Š Productivity
(320)
free with in-app purchases
9
STL Viewer ยท Model File Reader
STL Viewer ยท Model File Reader
STL Viewer ยท Model File Reader
Fast STL File View & 3D Reader
Free
๐Ÿ“Š Productivity
(2)
10
STEP File Viewer
STEP File Viewer
STEP File Viewer
View & Explore STEP/IGES
Free
๐Ÿ› ๏ธ Developer Tools
(3)
11
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
๐Ÿ“Š Productivity
(50)
free with in-app purchases
12
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
๐Ÿ”ง Utilities
(1)
subscription
13
3D Model Viewer - AR View
3D Model Viewer - AR View
3D Model Viewer - AR View
View model in AR and 3D mode
Free

View and interact with various 3D model formats in both AR and 3D modes. This intuitive tool supports local and cloud documents, custom backgrounds, and shadow casting. Easily import models via multiple methods and share your creations.

AR and 3D viewing modesSupports numerous 3D file formatsLocal and cloud document integration
๐Ÿ“Š Productivity
(323)
free with in-app purchases
14
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
๐Ÿ“Š Productivity
(6.3K)
freemium
15
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
๐Ÿ“Š Productivity
(3)
free with in-app purchases
16
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
๐Ÿ”ง Utilities
(14)
free
17
Zip File Viewer
Zip File Viewer
Zip File Viewer
by BYTO
Free

Easily open and play various file formats directly from compressed archives without needing to decompress them. Supports numerous media and document types, offering a simple interface for file management and access.

Open zip files directlyPlay/view files without uncompressingSupports various file formats (audio, video, docs)
๐Ÿ”ง Utilities
(5)
free
18
iFilemonger
iFilemonger
iFilemonger
Viewer for design and 3D files
Free

View and interact with design and 3D files directly on your mobile device. Supports a wide range of formats, including CAD drawings, 3D models, and images. Access files from the web, email, or other document providers.

View design and 3D filesInteractive rotation and zoomSupports DXF, IGES, STL, OBJ, VRML
๐Ÿ“Š Productivity
(16)
free
19
My File Organizer
My File Organizer
My File Organizer
Organize Files & Documents
Free

Consolidate and manage local and cloud files within one app. View, save, and transfer documents, presentations, media, and more across multiple cloud services and your device.

Unified local and cloud file managementInbuilt file viewer and playerTransfer files between cloud drives
๐Ÿ”ง Utilities
(6.5K)
ad-supported
20
3d Scanner Appโ„ข
3d Scanner Appโ„ข
3d Scanner Appโ„ข
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.)
๐Ÿ”ง Utilities
(15K)
freemium

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