205+ iOS apps curated and reviewed
With an average user rating of 4.2★, the free stl viewer category is one of the App Store's strongest. Browse all 205+ apps we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.9★ (7) | No | Yes | Aug 2026 |
| 2 |  | Free | 4.3★ (866) | Yes | Yes | Aug 2026 |
| 3 |  | Free | 4.6★ (48) | No | Yes | Jul 2026 |
| 4 |  | Free | 4.2★ (49) | No | No | May 2026 |
| 5 |  | Free | 4.5★ (65) | Yes | Yes | Aug 2026 |
| 6 |  | Free | 4.5★ (1.1K) | Yes | Yes | Aug 2026 |
| 7 |  | Free | 4.4★ (334) | No | Yes | Aug 2026 |
| 8 |  | Free | 4.1★ (14) | No | No | Jul 2026 |
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.
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.
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.
View and interact with 3D models in augmented reality. Share instant screenshots and screen recordings of your designs directly from the app.
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.
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.
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.
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.
Easily view and interact with 3D models in various formats like USDZ, STL, and OBJ. Explore your designs with intuitive gestures, high-performance rendering, and augmented reality capabilities. Record animations of your models for sharing.
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.
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.
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.
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.
Instantly view and inspect a wide range of 3D file formats directly on your device. Offers AR viewing, 3D printing readiness checks, and detailed model specifications without requiring an account or cloud upload.
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.
View and present 3D models from Rhino 3D on your iPhone or iPad. Navigate models with intuitive touch gestures, load files from various sources, and visualize them in augmented reality. Includes a markup tool for annotations.
Instantly open and view any text, code, or log file. This app offers professional syntax highlighting and line numbers, making it ideal for professionals who need to access and read various file formats on the go. It supports numerous common file types and provides customizable viewing themes.
Explore 3D architectural models in virtual reality. Navigate through home designs with intuitive controls, experiencing them before construction. Ideal for professionals to share immersive project previews with clients.
Easily open and view Winmail.dat, MSG, and XPS email files that are incompatible with most email clients. Convert embedded content like appointments and notes into native iOS formats, and access all attachments within these files.