# CAD Viewer Friendly: STEP STL — 3D Measure & DXF PDF Export

> 3D Measure & DXF PDF Export (iPhone/iPad app by jian-nan lan.)

- Source: https://appshunter.io/ios/app/cad-viewer-friendly-step-stl/id6804088434 (this page in markdown: same URL + `.md`)
- Developer: [jian-nan lan](https://appshunter.io/developer/6803885361)
- Category: Graphics & Design, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 12 MB
- Languages: American English, Arabic, French (France), German (Germany), Hindi, Indonesian, Italian, Japanese, Korean, Malay and 6 more
- Released: 2026-09-01
- Data updated: 2026-09-16
- User reviews in markdown: https://appshunter.io/ios/app/cad-viewer-friendly-step-stl/id6804088434/reviews.md

## What is CAD Viewer Friendly?

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.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual Full Access | $8.99 | per year |



## Version history (last 5 releases)

### 1.1.5 — 2026-09-15

• Updated the PNG, DXF, and PDF export buttons to use a consistent neutral appearance.
• Export formats and functionality are unchanged.

### 1.1.4 — 2026-09-13

• 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.

### 1.1.3 — 2026-09-08

• Added an English App Preview showing file opening, dimension recognition, measurement, touch navigation and export.
• Improved App Store search metadata and product-page descriptions.
• Preserved proportion-correct PNG export, exact trial/renewal date display, the 3-day trial and localized annual subscription.

### 1.1.2 — 2026-09-05

• Fixed PNG exports so models preserve their original proportions without stretching.
• Improved subscription status refresh and now show the exact trial or subscription expiration date.
• Updated the annual free trial to 3 days and corrected localized subscription disclosures.
• Improved version reporting and multilingual support.

### 1.1.1 — 2026-09-04

• Updated App Store screenshots to present the 3D viewing and dimension workflow more clearly.
• No changes to app functionality in this release.

## More apps by jian-nan lan

- [Lighting Friendly: LED Screen](https://appshunter.io/ios/app/lighting-friendly-led-screen/id6803885359)

All apps by jian-nan lan: https://appshunter.io/developer/6803885361

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-16.*