Stairstep
Not terrible STEP File Viewer
About
View and inspect 3D models in STEP file format. Explore models with intuitive orbit, pan, and zoom controls, aided by a reference grid and scale bar. Access detailed geometry information including vertices, triangles, and dimensions.
What's New in Stairstep
1.2
July 30, 2026
- Add cross section and measurement tools - Switch to realitykit
Developer apps
FAQ
What devices does Stairstep support?
Stairstep is available on Mac, iPhone, and iPad, offering cross-platform compatibility for viewing your 3D models.
How do I navigate models in Stairstep?
You can drag your finger to orbit the model, and use scrolling or pinching gestures to zoom in and out. The scale bar dynamically updates to reflect the current view.
What kind of geometry information can I see in Stairstep?
Stairstep's inspector provides detailed geometry data, including the number of vertices and triangles, material information, and overall dimensions of the model.
Is Stairstep suitable for professional use?
With its ability to inspect detailed geometry and dimensions, Stairstep is a useful tool for professionals who need to review 3D models on the go.
How often is Stairstep updated?
The app was last updated on June 27, 2026, indicating active development and potential for future improvements and bug fixes.
What is the age rating for Stairstep?
Stairstep has an age rating of 4+, making it suitable for a wide range of users, including younger individuals who may be learning about 3D modeling.
Does Stairstep have ads?
No, Stairstep does not contain advertisements, providing an uninterrupted viewing experience for your 3D models.