Screenshots
Icon palette
About this app
STEP File Viewer is a lightweight yet powerful tool for viewing .step and .stp files on macOS, iPad, and iPhone. Key Features • View STEP models in 3D with rotate, pan, and zoom controls using perspective projection. • Display 3D models in solid, shaded, or wireframe modes. • Load and view IGES/IGS models. • Supports assembly-level colors and exploded views (requires the model to include assembly data). • Parse and load STEP models as assemblies • Support PMI annotations, dimension details, and model information panels in AP242 models for easier design review. • Measure auto-detected hole features, bounding box dimensions, point-to-point distances, diameter/radius, and angles to verify key dimensions more quickly. • Apply axis-aligned section planes (XY, XZ, YZ) to reveal the model’s internal geometry. • Explode model components to inspect the parts clearly in expanded space, …
App details
What you can learn from STEP File Viewer
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The 5 screenshots above are STEP File Viewer's answers to those questions — they're public, they're real, and they made it through Apple's review.
Notice the first screenshot in particular. It's the one users see in search results and on the product page, and it's where most apps spend their best caption and tightest design. Look at the proportion of background to phone, where the text sits, what one thing the image is trying to communicate.
Want to see how other Developer Tools apps approach the same problem? Browse more Developer Tools apps in the showcase.
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