CAD Viewer Friendly: STEP STL
3D Measure & DXF PDF Export
Free · In‑App Purchases
Open, inspect and measure STEP, STP and STL models anywhere. Export accurate PNG, DXF or vector PDF views directly from your iPhone or iPad.
Open STEP, STP and STL models on your iPhone or iPad in seconds. Inspect overall dimensions, measure distances and arcs, create orthographic views, and export proportion-correct PNG, DXF and vector PDF files—all directly on your device.
FAST 3D INSPECTION
• Open STEP, STP and STL files
• Rotate, zoom and pan with intuitive touch controls
• Read automatically detected overall dimensions
• Change model colors for clearer presentation
MEASURE & ANALYZE
• Measure distances between selected points
• Measure arcs on continuous curved edges
• Review TOP, FRONT and RIGHT orthographic views
EXPORT & SHARE
• Export proportion-correct PNG engineering views
• Export DXF and vector PDF views
• Share results with classmates, clients, coworkers or friends
Designed for students, 3D creators, engineers, makers, CNC users and technical sales teams who need quick answers away from a desktop. Files are processed locally on the device. No account registration or login is required. Always verify critical dimensions before manufacturing.
An Apple-confirmed annual subscription is required before using the app. Eligible new subscribers receive a 3-day free trial. If the trial is not cancelled before it ends, Apple charges the localized annual price shown in the purchase sheet and the subscription renews automatically. Manage or cancel the subscription in Apple Account settings.
Privacy Policy: https://friendlyappios.netlify.app/#cad-viewer-friendly-privacy
Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Need animated outline lighting or marquee text? Search for Lighting Friendly on the App Store.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Subscription access is now enforced consistently: confirm the annual subscription with Apple before using the app. Eligible new subscribers receive a 3-day free trial.
• Added clear subscription, trial and auto-renewal guidance in 16 app languages.
• Added localized App Store information for Traditional Chinese, Simplified Chinese and other supported languages.
• Kept proportion-correct PNG export and verified StoreKit entitlement restoration.
The developer, jian-nan lan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- jian-nan lan
- Size
- 13.1 MB
- Category
- Graphics & Design
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
English and 15 more
- English, Arabic, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Portuguese, Simplified Chinese, Spanish, Thai, Traditional Chinese, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Annual Full Access $8.99
- Copyright
- © 2026 Peter Lan