Best Zstl Apps

206+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated June 2026

Every iPhone needs a few good zstl apps. We benchmark 206+ 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 Zstl Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1STL Simple ViewerSTL Simple ViewerFree4.3★ (866)YesYesSep 2026
23D GO | 3D Printing Models3D GO | 3D Printing ModelsFree4.7★ (3.9K)NoYesSep 2026
3Creality Cloud - 3D PrintingCreality Cloud - 3D PrintingFree4.6★ (7.1K)NoYesSep 2026
4STL File Viewer ProSTL File Viewer ProFree4.5★ (65)YesYesSep 2026
5Autodesk FusionAutodesk FusionFree4.5★ (4.1K)NoNoSep 2026
6STL MasterSTL MasterFree4.2★ (49)NoNoMay 2026
73D Model Viewer - AR & Print3D Model Viewer - AR & PrintFree4.4★ (338)NoYesSep 2026
83D Modeling, Design: Shapeyard3D Modeling, Design: ShapeyardFree4.5★ (5.7K)NoYesSep 2026

Top Picks for Zstl

STL Simple Viewer#1

STL Simple Viewer by Victor Bovio

View 3D STL & 3MF CAD models
Editor's Choice
📊 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
  • 🔍 Limited functionality for larger files
3D GO | 3D Printing Models#2

3D GO | 3D Printing Models by SimpleDev LLC

Thingiverse Printables Cults3d
Strong Contender
🔧 Utilities
4.7😐(3.9K ratings)
FreeIn-App Purchases
3D GO | 3D Printing Models screenshot 1
3D GO | 3D Printing Models screenshot 2
3D GO | 3D Printing Models screenshot 3
3D GO | 3D Printing Models screenshot 4
3D GO | 3D Printing Models screenshot 5
3D GO | 3D Printing Models screenshot 6

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.

What We Love

  • 👍 Convenient and free app
  • 🚀 Great database of free files
  • 🚀 Easy to send prints directly to printer
  • 👍 Helpful developer response
  • 🚀 Seamless switching between sites

Room to Improve

  • 💰 Subscription required for full access
  • 🐛 Buggy app with crashes and freezes
  • 🚫 Inaccessible for smaller screens
  • 🚫 Limited functionality compared to websites
  • 🚫 Files saved as zips are inconvenient
Creality Cloud - 3D Printing#3

Creality Cloud - 3D Printing by CREALITY 3D (HK) TECHNOLOGY LIMITED

Make 3D Printing Simple
Worth Considering
🔧 Utilities
4.6😊(7.1K ratings)
FreeIn-App Purchases
Creality Cloud - 3D Printing screenshot 1
Creality Cloud - 3D Printing screenshot 2
Creality Cloud - 3D Printing screenshot 3
Creality Cloud - 3D Printing screenshot 4
Creality Cloud - 3D Printing screenshot 5

This platform simplifies 3D printing for makers and hobbyists. Explore a vast model library, slice and print directly from your phone, and manage your printer remotely. Connect with a global community, earn rewards for your designs, and enhance your creativity.

What We Love

  • 🚀 Easy to use
  • 👍 Intuitive interface
  • 🔍 Vast model library
  • 🌐 Remote printing and monitoring
  • 💡 Integrated slicer and scanner
  • 🤝 Supportive community

Room to Improve

  • 🐛 Connectivity issues
  • 🔍 Limited customization options
  • 💰 Paid features and subscriptions
  • 🤖 Unreliable AI support
  • 📱 Suboptimal iPad experience

More Zstl apps to explore

FAQ about Zstl

What are the best zstl apps for iPhone?
STL Simple Viewer tops our zstl apps ranking as of June 2026, with a 4.3-star average from 866 App Store ratings, and it's free to download.
Yes — 20 of the top zstl apps we rank are free to download, including STL Simple Viewer and 3D GO | 3D Printing Models.
STL Simple Viewer shows ads and offers in-app purchases, according to its App Store listing as of June 2026.
We track 206+ zstl apps on the iOS App Store as of June 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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