Best 3D Cad Model Viewer Apps

247+ iOS apps curated and reviewed

4.0 avg rating
19 free apps
Updated September 2026

Looking for free 3d cad model viewer apps? 19 of our 247+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top 3D Cad Model Viewer Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
13D CAD Model Viewer3D CAD Model ViewerFree3.3★ (13)NoNoMay 2026
2Open3D: STL & 3D Model ViewerOpen3D: STL & 3D Model ViewerFree4.8★ (5)YesNoSep 2026
3STL & 3D Model Viewer - Mes3DSTL & 3D Model Viewer - Mes3DFree4.5★ (10)NoYesSep 2026
4ViewCAD:2D/3D CAD Model ViewerViewCAD:2D/3D CAD Model ViewerFree—NoYesMay 2026
5DWG FastView-CAD Viewer&EditorDWG FastView-CAD Viewer&EditorFree4.5★ (1.1K)YesYesSep 2026
6STP Viewer : STEP 3DSTP Viewer : STEP 3DFree—NoYesJul 2026
7STL Simple ViewerSTL Simple ViewerFree4.3★ (866)YesYesSep 2026
8STEP ViewerSTEP ViewerFree—NoNoSep 2026

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FAQ about 3D Cad Model Viewer

What are the best 3d cad model viewer apps for iPhone?
3D CAD Model Viewer tops our 3d cad model viewer apps ranking as of September 2026, with a 3.3-star average from 13 App Store ratings, and it's free to download.
Yes — 19 of the top 3d cad model viewer apps we rank are free to download, including 3D CAD Model Viewer and Open3D: STL & 3D Model Viewer.
3D CAD Model Viewer has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 247+ 3d cad model viewer apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
3D CAD Model Viewer supports a wide range of formats including dwg, catia, x_t, stp, and igs files. This broad compatibility ensures you can work with most of your existing CAD data.
The application allows you to upload models into your app, suggesting offline access to previously uploaded files. However, initial file opening from cloud services like Dropbox or Google Drive would require an internet connection.