3D Scratchpad vs CAD Smart Modeling
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3D Scratchpad
Create 3D models with a user-friendly design tool. Freehand draw in 3D using primitive shapes and gestures. Manipulate objects with augmented reality and share your creations as .usdz files.
- Freehand 3D drawing
- Primitive solid shapes
- Intuitive gestures
- Augmented reality manipulation
- Share as .usdz files
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3D Scratchpad is an easy-to-use, full-featured design tool for creating 3D models. Freehand draw in three dimensions using simple primitive solid shapes and intuitive gestures. Manipulate objects as if they were in the real world with augmented reality, and share your models as .usdz files for viewing in augmented reality. 3D Scratchpad creates a short path between design ideas and useful 3D models for designers, modelers, makers, gamers, 3D-printing enthusiasts, hobbyists, educators, engineers, and architects. Use 3D Scratchpad to create and fabricate prototypes, to model new products, parts, and structures, and to create and share 3D art and designs. 3D Scratchpad enables you to design in the real world. Built to enable immersive, intuitive, and interactive design, 3D Scratchpad unlocks your design creativity and gives you the tools you need to create and share 3D models. Purchasing an auto-renewing 3D Scratchpad Subscription enables the ability to save and share 3D models.
CAD Smart Modeling
Create detailed 3D models, technical drawings, and digital prototypes on your mobile device. This versatile CAD app is suitable for architecture, product design, engineering, and 3D printing, offering intuitive tools for both beginners and professionals.
- 3D Modeling & CAD Design
- Technical Drawing
- Precise Geometric Constructions
- Import & Export of CAD and 3D Files
- Product Design & Prototyping
- 3D Models for Architecture & 3D Printing
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CAD Smart Modeling is your powerful CAD app for 3D modeling, technical drawing, and precise design. Create 3D models, CAD drawings, and digital prototypes directly on your iPhone or iPad. Ideal for architecture, product design, engineering, 3D printing, and DIY projects. Why CAD Smart Modeling? 3D Modeling Made Easy & Precise Create detailed 3D models and geometric designs with intuitive CAD tools—perfect for beginners and professionals alike. CAD Design & Technical Drawing Use powerful tools for precise design, surface and solid modeling, and prototyping. Versatile CAD App for Many Applications Architecture, product development, technical drawing, construction, 3D printing, and creative visualization—all in one app. Import & Export of 3D Models Import your own CAD models or external 3D files and export your designs in common formats for sharing or further processing. Unlimited Creative Freedom Create 3D objects, 3D models, or 3D text – ideal for presentations, social media, or product visualizations. Suitable for Beginners & Professionals Whether you're a student, DIY enthusiast, hobby designer, or professional CAD user – CAD Smart Modeling adapts to your workflow. Features at a Glance • 3D Modeling & CAD Design • Technical Drawing • Precise Geometric Constructions • Import & Export of CAD and 3D Files • Product Design & Prototyping • 3D Models for Architecture & 3D Printing • Creative 3D Text & Visualizations Discover the possibilities of modern CAD modeling on your smartphone. Download CAD Smart Modeling now and turn your ideas into professional 3D models. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: CAD Smart Modeling at 3.5 against 3D Scratchpad's 2.7. CAD Smart Modeling also leads on update cadence (every 5 months vs every 15 months) and device support (4 vs 2). 3D Scratchpad's advantage is ads (none vs shown) and review sentiment (19% vs 0%). On price, ratings volume, in-app purchases and monetization model 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. 3D Scratchpad sells 3 in-app purchases, starting at $1.99 per month and CAD Smart Modeling sells 7 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
CAD Smart Modeling holds the better App Store score, 3.5 against 2.7. Both are backed by a comparable volume of ratings — 12 and 8 respectively. Written reviews complicate that: 19% of 3D Scratchpad's written reviews are positive against 0% of CAD Smart Modeling's, so the app with the better star average is not the one people write more warmly about.
3D Scratchpad ships an update every 15 months, CAD Smart Modeling every 5 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.
| Parameter | 3D Scratchpad | CAD Smart Modeling |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (12 ratings) | 3.5 (8 ratings) — better |
| Positive reviews | 18.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 12 — better | 8 |
| Update frequency | Every 15 months | Every 5 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 440 MB |
| Age rating | 4+ | 4+ |
| Developer | Engineered Stuff | Sebastian Kemper |
Customer experience
3D Scratchpad
CAD Smart Modeling
In-app purchases
3D Scratchpad
- One Month Subscription$1.991 Month
- Six Month Subscription$6.996 Months
- One Year Subscription$9.991 Year
CAD Smart Modeling
- Premium access$3.991 Month
- Premium access$8.991 Month
- Premium access$22.991 Year
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- Premium access$44.991 Year
- Pro Version3 Days trial$44.991 Year
- Premium Access$44.99
- Premium Access$89.99
Questions
Is 3D Scratchpad free?
Is CAD Smart Modeling free?
Which has better reviews, 3D Scratchpad or CAD Smart Modeling?
Do 3D Scratchpad or CAD Smart Modeling have ads?
Which is updated more often, 3D Scratchpad or CAD Smart Modeling?
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