Best 3D File Viewer Apps

248+ iOS apps curated and reviewed

4.1 avg rating
20 free apps
Updated September 2026

Out of 248+ 3d file viewer apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top 3D File Viewer Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
13D File Viewer: OBJ STP & more3D File Viewer: OBJ STP & moreFree4.5★ (48)NoYesSep 2026
2STL Simple ViewerSTL Simple ViewerFree4.3★ (866)YesYesSep 2026
3Autodesk FusionAutodesk FusionFree4.5★ (4.1K)NoNoSep 2026
4STL & 3D Model Viewer - Mes3DSTL & 3D Model Viewer - Mes3DFree4.5★ (10)NoYesSep 2026
53D Model Viewer - AR & Print3D Model Viewer - AR & PrintFree4.4★ (344)NoYesSep 2026
6STEP ViewerSTEP ViewerFree—NoNoSep 2026
73D Model Viewer - AR View3D Model Viewer - AR ViewFree4.2★ (328)YesYesSep 2026
83D Converter and Viewer3D Converter and ViewerFree—NoNoSep 2026

Top Picks for 3D File Viewer

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
  • 🔍 Limited functionality for larger files
4.5😐(4.1K ratings)
Free
Autodesk Fusion screenshot 1
Autodesk Fusion screenshot 2
Autodesk Fusion screenshot 3

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.

What We Love

  • 🚀 Great for showing designs
  • 👍 Easy to use and understand
  • 💡 Powerful CAD/CAM capabilities
  • 🚀 Convenient for collaboration

Room to Improve

  • 🐛 Crashes and login issues
  • 👎 Limited functionality compared to desktop version
  • 👎 Constantly logs out
  • 🐛 Buggy and unreliable

More 3D File Viewer apps to explore

FAQ about 3D File Viewer

What are the best 3d file viewer apps for iPhone?
3D File Viewer: OBJ STP & more tops our 3d file viewer apps ranking as of September 2026, with a 4.5-star average from 48 App Store ratings, and it's free to download.
Yes — 20 of the top 3d file viewer apps we rank are free to download, including 3D File Viewer: OBJ STP & more and STL Simple Viewer.
3D File Viewer: OBJ STP & more has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 248+ 3d file viewer apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
3D File Viewer supports over 20 popular 3D file formats, including STL, OBJ, FBX, GLTF, PLY, 3DS, DAE, STP, IGES, IFC, 3MF, AMF, BIM, BREP, FCSTD, 3DM, OFF, and WRL.
3D File Viewer offers two subscription plans to remove ads: a monthly plan for $3.99 and an annual plan for $29.99.

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