STP Viewer vs Quick3D CAD Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STP Viewer
This application allows users to open and view large, complex 3D CAD files on their mobile devices. It supports standard STEP and STP file formats, offering smooth navigation and offline accessibility for professionals and enthusiasts alike.
- Open STP and STEP files
- Fluid 3D navigation (orbit, pan, zoom)
- Instant file loading from various sources
- View complex assemblies
- Offline accessibility
- Battery and RAM efficient
- Supports files from major CAD software
Read full descriptionHide full description
With our advanced 3D rendering engine, you can open large and complex computer-aided design (CAD) files seamlessly. The app acts as an all-in-one CAD file reader, allowing you to access critical data whenever and wherever you need it. ### Why Choose This STP & STEP Viewer? Google and web searches often show that finding a lightweight mobile tool to view STEP files can be challenging. Our app solves this by focusing purely on speed, rendering accuracy, and an intuitive user interface. It works flawlessly as both an STP viewer and a STEP viewer, ensuring compatibility with standard ISO 10303 files exported from any modern CAD ecosystem. ### Key Technical Features: • Comprehensive STP & STEP Support: Fully optimized to read and render both .stp and .step file extensions. • Fluid 3D Navigation: Experience smooth orbiting, panning, and pinch-to-zoom gestures even with high-polygon assemblies. • Instant File Loading: Open CAD models directly from your iOS Files app, iCloud Drive, email attachments (Gmail, Outlook), or communication tools like Slack and WhatsApp. • Structural Integrity: View complex mechanical assemblies and nested components with high visual fidelity. • Offline Accessibility: Fully functional without an active internet connection. Perfect for secure facilities, remote fields, or offline workshops. • Battery & RAM Efficient: Engineered using modern mobile graphics frameworks to prevent overheating and excessive battery drain. ### Cross-Platform Ecosystem Compatibility: This mobile 3D viewer supports files generated from all major CAD software suites. If your workflow involves files exported from any of the following platforms, our app is your ideal mobile companion: • SolidWorks & Autodesk Fusion 360 • AutoCAD & Autodesk Inventor • CATIA & PTC Creo • Rhino 3D & Siemens NX • TurboCAD, FreeCAD, and more. ### Tailored for Engineering Professionals: • Mechanical & Aerospace Engineers: Quickly review part tolerances and geometry during team alignment meetings. • CNC Programmers & Machinists: Verify 3D model structures directly next to the machine without running back to a computer. • Sales & Project Managers: Showcase highly detailed interactive 3D prototypes to clients during sales pitches and presentations. • 3D Printing Enthusiasts: Check standard CAD exports before sending them to slicing software. ### Flexible Premium Plans: Gain unlimited access to advanced viewing features, large file processing, and a completely ad-free workspace. Choose the subscription model that aligns with your professional workflow: • Weekly Plan: Ideal for short-term design reviews, sudden project deadlines, or quick freelance jobs. • Monthly Plan: Great for ongoing manufacturing sprints, contract work, and mid-term engineering projects. • Yearly Plan: Our best-value option providing year-round, uninterrupted access for dedicated CAD professionals and engineering teams. Privacy Policy: https://sites.google.com/view/stepviewerpolicy/home Terms of Service: https://sites.google.com/view/stp-viewer-appterms/home
Quick3D CAD Viewer
Read full descriptionHide full description
Quick3D Viewer 3D CAD Viewing Made Simple. Quick3D Viewer is a free 3D model viewer for iPhone and iPad. Open and explore a wide range of 3D files, including STEP, IGES, STL, OBJ, and more, right from your mobile device. Whether you're on the factory floor, meeting with clients, or away from your desk, Quick3D Viewer makes it easy to inspect 3D models wherever you go. Key Features ■ Supports Multiple 3D File Formats View STEP / STP, IGES / IGS, STL, OBJ, PLY, 3MF, GLB, and USDZ files. ■ Intuitive 3D Navigation Rotate, zoom, and pan models using simple touch gestures. Explore your designs from different angles. ■ Full-Screen Viewing Hide banner ads in full-screen mode and enjoy more space to inspect your 3D models. ■ Designed for iPhone and iPad View 3D models on your phone or tablet, wherever your work takes you. Perfect For - Inspecting 3D models on the factory floor - Reviewing CAD designs and engineering projects - Sharing designs during meetings - Checking models for 3D printing - Viewing CAD files while on the go 3D CAD in Your Pocket. Make 3D viewing easier with Quick3D Viewer.
Screenshots
Verdict
The clearest difference is in-app purchases: Quick3D CAD Viewer at none against STP Viewer's 3. STP Viewer's advantage is ads (none vs shown) and iOS requirement (13.0 vs 18.6). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. STP Viewer sells 3 in-app purchases, starting at $1.99 per 7 days. Quick3D CAD Viewer asks for nothing beyond the download.
| Parameter | STP Viewer | Quick3D CAD Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 44 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | CODIGITAL SOLUTIONS | Ryo Tazaki |
In-app purchases
STP Viewer
- Pro Access$1.997 Days
- Pro Access$4.991 Month
- Pro Access$9.991 Year
Quick3D CAD Viewer
No in-app purchases
Questions
Is STP Viewer free?
Is Quick3D CAD Viewer free?
Do STP Viewer or Quick3D CAD Viewer have ads?
Other comparisons















