Best Stl File Viewer Apps

250+ iOS apps curated and reviewed

3.8 avg rating
18 free apps
Updated August 2026

Every iPhone needs a few good stl file viewer apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Stl File Viewer Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1STL & 3D Model Viewer - Mes3DSTL & 3D Model Viewer - Mes3DFree5.0★ (4)NoYesAug 2026
2STL Simple ViewerSTL Simple ViewerFree4.3★ (866)YesYesAug 2026
3STL File Viewer ProSTL File Viewer ProFree4.5★ (65)YesYesAug 2026
4Quick STL ViewerQuick STL ViewerFree4.9★ (7)NoYesAug 2026
53D GO | 3D Printing Models3D GO | 3D Printing ModelsFree4.7★ (3.9K)NoYesAug 2026
6STL MasterSTL MasterFree4.2★ (49)NoNoMay 2026
73D File Viewer: OBJ STP & more3D File Viewer: OBJ STP & moreFree4.6★ (48)NoYesAug 2026
8Autodesk FusionAutodesk FusionFree4.5★ (4.1K)NoNoAug 2026

Top Picks for Stl File Viewer

STL & 3D Model Viewer - Mes3D#1

STL & 3D Model Viewer - Mes3D by ONNEX YAZILIM ANONIM SIRKETI

Supports STEP, GLB, OBJ, glTF
🛠️ Developer Tools
5.0(4 ratings)
Free
STL & 3D Model Viewer - Mes3D screenshot 1
STL & 3D Model Viewer - Mes3D screenshot 2
STL & 3D Model Viewer - Mes3D screenshot 3
STL & 3D Model Viewer - Mes3D screenshot 4
STL & 3D Model Viewer - Mes3D screenshot 5

Easily view, inspect, and explore 3D models on your device. Supports common file formats and offers intuitive touch controls for rotation, panning, and zooming. Visualize models in AR and capture snapshots for sharing.

STL Simple Viewer#2

STL Simple Viewer by Victor Bovio

View 3D STL & 3MF CAD models
Strong Contender
📊 Productivity
4.3😞(866 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#3

STL File Viewer Pro by Andeesh Mehdi Syed

Simplest Way To View STL Files
Worth Considering
🛠️ Developer Tools
4.5(65 ratings)
FreeAdsIn-App Purchases
#38in 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#4

Quick STL Viewer by KEAT MEN TANG

Clean 3D Model Viewer
Pick #4
🔧 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 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
(3.9K)
free with in-app purchases
5
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
🔧 Utilities
(49)
free
6
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
🔧 Utilities
(48)
free with in-app purchases
7
Autodesk Fusion
Autodesk Fusion
Autodesk Fusion
by Autodesk Inc.
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
8
Winmail Viewer:for DAT,XPS,MSG
Winmail Viewer:for DAT,XPS,MSG
Winmail Viewer:for DAT,XPS,MSG
RAR, Winmail.dat Reader, TNEF
Free

This tool allows users to extract, view, and save the contents of winmaildat, msg, and xps files. It provides a complete solution for managing these file types, including viewing all attachments and rich text messages.

Extract winmaildat, msg, xps filesView file contentsSave extracted files
📊 Productivity
(1)
free
9
3D Model Viewer & Converter
3D Model Viewer & Converter
3D Model Viewer & Converter
STL,GLB,3MF,OBJ,DXF,USDZ ...
Free

This tool allows you to open, view, and convert a wide variety of 3D file formats on your Apple devices. It offers basic editing, cross-sectioning, and exploded views, with options for batch conversion and exporting projected views.

Import numerous 3D formatsConvert between popular 3D formatsBasic editing tools
📊 Productivity
(1)
freemium
10
STL Viewer · Model File Reader
STL Viewer · Model File Reader
STL Viewer · Model File Reader
Fast STL File View & 3D Reader
Free

Quickly view and interact with 3D model files. Rotate, zoom, and project models into your environment using augmented reality. Offers customization options and multi-model support.

Fast STL file viewing3D model rotation and zoomAugmented Reality (AR) projection
📊 Productivity
(0)
free with in-app purchases
11
STP Viewer : STEP 3D
STP Viewer : STEP 3D
STP Viewer : STEP 3D
3D CAD File Reader & Opener
Free
🔧 Utilities
(0)
12
EPS Viewer: Open & View Files
EPS Viewer: Open & View Files
EPS Viewer: Open & View Files
EPS Reader & PostScript Tools
Free
📊 Productivity
(0)
13
Viewer 2
Viewer 2
Viewer 2
Zip Rar 7z File Viewer
Free
$6.99 | 100% OFF

This app allows you to view and edit various file types, including code, databases, archives, images, and videos. It supports multiple programming languages and character encodings for code viewing and editing.

Code viewer with syntax highlightingCode editorArchive file extraction (ZIP, RAR, 7Z)
🌟 Lifestyle
(8)
free
14
STLLens: 3D Model Viewer
STLLens: 3D Model Viewer
STLLens: 3D Model Viewer
Inspect STL & OBJ Models
$0.99
🔧 Utilities
(0)
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
📊 Productivity
(3)
free with in-app purchases
16
Unlimited Viewer
Unlimited Viewer
Unlimited Viewer
by The Virtually Unlimited Corp
$0.99
🔧 Utilities
(0)
17
TimView3D
TimView3D
TimView3D
by Exclusive Automation, LLC
Free
🔧 Utilities
(0)
18
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
🔧 Utilities
(1)
subscription
19
JT File Viewer
JT File Viewer
JT File Viewer
Open JT Files offline
Free
🎨 Graphics & Design
(0)

FAQ about Stl File Viewer

What are the best stl file viewer apps for iPhone?
STL Simple Viewer tops our stl file viewer apps ranking as of August 2026, with a 4.3-star average from 866 App Store ratings, and it's free to download.
Yes — 18 of the top stl file viewer apps we rank are free to download, including STL Simple Viewer and STL File Viewer Pro.
STL Simple Viewer shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ stl file viewer apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
STL Simple Viewer allows you to quickly view 3D STL CAD models. You can rotate, pan, and zoom to inspect the model from different angles. It also provides detailed information about the model and offers advanced rendering options.
The app supports both ASCII and Binary STL file formats. You can also load an STL file directly from a ZIP archive, making it convenient to manage your models.

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