Comparison

Duet Display vs Shapr 3D CAD modeling

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Duet Display

Transform your iPad or iPhone into an advanced, lag-free extra display for your Mac or PC. Interact with your computer using touch and gestures, and unlock professional drawing capabilities with Apple Pencil support.

Highlights
  • Extra display for Mac & PC
  • Lag-free performance
  • Touch and gesture support
  • Apple Pencil integration
  • Professional drawing tools
  • Portable productivity
Read full description

#1 best-selling iPad app in US, Japan, UK, Germany, and 17 other countries! Duet turns your iPad or iPhone into the most advanced extra display for your Mac & PC. Developed by a team of ex-Apple engineers, Duet offers unparalleled performance and display quality - all with zero lag. — DO MORE — Be twice as productive by multitasking with two screens. And for those that travel, have a portable way to stay productive. — INCREDIBLY SIMPLE — To get started, plug your iPad into your desktop using your charging cable. The free Duet desktop app will automatically detect your device, and transform it into a high performance touchscreen display. There’s no need to worry about unreliable Wi-Fi, laggy performance, pixelated screens or managing network passwords. — TOUCHSCREEN — Interact with Mac & PC like never before, with touch & gestures, including two-finger scrolling, pan and zoom. And with our latest release, you can even add a touch bar to any iPad with any Mac. — PERFECT FOR APPLE PENCIL — With Duet Pro, you can turn your iPad and Apple Pencil into a professional graphics tablet. We’ve re-engineered our rendering algorithms for ultra-responsive drawing, optimized specifically for designers, illustrators and artists. Duet Pro also unlocks pressure & tilt sensitivity, hover, palm rejection, and more to seamlessly draw in the most powerful programs for professionals. Get precise control in Photoshop, Corel Painter, Lightroom, ToonBoom, Illustrator, Manga Studio and more.  — PRESS — TechCrunch - "Feels Like Magic" TIME - "Getting Work Done Faster and More Efficiently" The Guardian - "Lag-free" Forbes - "The simple thing to note is this...Duet Display works." The Verge - "Glorious Fluidity" Lifehacker - "It's fast, easy to use, and works great" Business Insider - "Zero lag and true retina resolution” Wall Street Journal - “It’s as easy as just plugging it in" — REVIEWS — “Awesome! My iPad Pro can be an extra monitor! Cool app” ~CEO of T-Mobile, John Legere “Very smooth and responsive indeed, plus you could use the touch screen to “click” on screen interfaces!” ~Photographer, Lok Cheung “Love the ability to use my iPad as a monitor with Duet.” ~Former Chief Evangelist of Apple, Guy Kawasaki “Just started using this app called Duet… Kinda love it so far.” ~Comedian and Youtube, Phillip DeFranco “All my mac folks look at the Duet app… GREAT!” ~Actor and Comedian, Sinbad  "I really like the app, I suppose the biggest compliment I can give is that it's so easy to setup it almost seems like an Apple product.” ~Early Adopter, M. Nightingale "Amazing solution for me by the way. Works as I was hoping for and actually my main reason for getting an iPad : )” ~Early Adopter, M. Gemzoe Duet Works With: All iPhones and iPads with iOS 7.0 and later All Macs with 10.9 (Mavericks) and later All PCs with Windows 7 and later Duet Pro Works With: All iPad Pros with Apple Pencil All Macs with 10.9 (Mavericks) and later All PCs with Windows 8.1 and later (64 bit) Duet Pro is an optional upgrade for additional features, and price may vary by location. Duet Pro subscriptions will be charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. You will not be able to cancel the subscription once activated. Manage Duet Pro in Account Settings after the optional upgrade. Learn more at http://www.duetdisplay.com Terms: https://www.duetdisplay.com/help-center/duet-terms-and-conditions Privacy Policy: https://www.duetdisplay.com/help-center/duet-privacy-policy

About

Shapr 3D CAD modeling

Design and collaborate on 3D models and drawings from any device, even offline. This intuitive CAD tool offers a clutter-free interface and real-time 3D renders in AR for seamless visual communication. Export and import a wide range of file formats for a complete design-to-manufacturing workflow.

Highlights
  • Multidevice and offline capability
  • Adaptive, clutter-free user interface
  • Real-time 3D renders in AR
  • Extensive import/export file format support
  • Output 2D Drawings
  • Design-driven collaboration
Read full description

From design to manufacturing. Teams collaborate with more impact. Instinctive design meets multidevice capability and full interoperability for the ultimate 3D design workflow. All platforms Pick your device and your input tool leveraging the first CAD tool envisioned for multidevice. Hybrid workflow meets cross-functional team processes with automatic sync across devices. Work from any device or offline: design and collaborate at your best, everywhere. Compact tools. Space for focus. An adaptive user interface auto-sorts tools, taking the clutter out of designing. Your focus stays front and center to eliminate clunking around and prioritize high-quality decisions. Design-driven collaboration. Make designing a reflex and visual communication second nature for the whole team. Instinctive CAD meets a visual communication bundle complete with real-time 3D renders in AR, shareable via a link for download-free viewing. Start where you are and finish strong – no expensive hardware needed. Shapr3D combines industrial-grade CAD with a user-friendly experience, including: • Siemens™ geometric Parasolid® modeling kernel and D-Cubed™ sketch engine • Export support for X_T, STEP, STL, OBJ, 2D DXF, 2D DWG, IGES, 3MF, SVG • Import support for SLDPRT, SLDASM, X_T, STEP, STL, IGES, 2D DWG, 2D DXF, JPG, PNG • Output 2D Drawings Get in touch Have a question? Visit our forum: https://discourse.shapr3d.com. For support queries, please submit a request here: https://shapr3d.com/support Terms of Use: https://www.shapr3d.com/terms-of-use Privacy Policy: https://www.shapr3d.com/privacy-policy

Screenshots

Duet Display3 screens
Shapr 3D CAD modeling4 screens

Verdict

The call

The clearest difference is ads: Shapr 3D CAD modeling at none against Duet Display's shown. Shapr 3D CAD modeling also leads on rating (4.7 vs 4.4) and update cadence (every 5 days vs every 3 weeks). Duet Display's advantage is iOS requirement (13.0 vs 17.0). On price, review sentiment, ratings volume and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Duet Display sells 6 in-app purchases, starting at $3.99 per month and Shapr 3D CAD modeling sells 6 in-app purchases, starting at $32.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Shapr 3D CAD modeling holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 49K and 34K respectively. Written reviews point the same way: 45% of Duet Display's written reviews are positive against 52% of Shapr 3D CAD modeling's.

UpkeepUpdate frequency

Duet Display ships an update every 3 weeks, Shapr 3D CAD modeling every 5 days. Both last shipped on November 5, 2026.

Scorecard4 real differences · 6 level
Duet Display versus Shapr 3D CAD modeling: the parameters behind the verdict, then further details
ParameterDuet DisplayShapr 3D CAD modeling
PriceFreeFree
Rating4.4 (49K ratings)4.7 (34K ratings) — better
Positive reviews45.5% of reviews52.3% of reviews — better
Number of ratings49K — better34K
Update frequencyEvery 3 weeksEvery 5 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod, Vision ProiPhone, iPad, Mac, Vision Pro
Requires iOS13.0 — better17.0
Further details — not scored
Size59 MB1.7 GB
Age rating4+4+
DeveloperDuet, Inc.Shapr3D Zrt

Customer experience

Duet Display

All ratings48,776 ratings
Positive86.2%
Neutral3.1%
Negative10.7%
Written reviews2,386 reviews
Positive45.5%
Neutral6.7%
Negative47.9%

Shapr 3D CAD modeling

All ratings34,235 ratings
Positive94.8%
Neutral1.5%
Negative3.6%
Written reviews826 reviews
Positive52.3%
Neutral12.6%
Negative35.1%

User reviews

Duet Display

From 49K App Store ratings

What we love

  • 🚀 Works seamlessly as a second screen
  • 👍 Useful for productivity and multitasking
  • 🎨 Great for artists and designers
  • 💻 Extends desktop to iPad
  • ⭐ Excellent customer support

Room to improve

  • 🐛 Connectivity issues and crashes
  • 🔋 High battery consumption
  • 🔒 Subscription model for full functionality
  • 🔍 Confusing setup process
  • 💸 Expensive for the features provided

Shapr 3D CAD modeling

From 34K App Store ratings

What we love

  • 🚀 Super easy to use
  • 👍 Intuitive interface
  • 🚀 Powerful features
  • 👍 Great for beginners
  • 👍 Excellent tutorials

Room to improve

  • 💰 Expensive subscription
  • 💰 Pricing not suitable for hobbyists
  • 🔒 Limited free version
  • 🐛 Occasional bugs and crashes
  • 👎 Navigation and controls could be improved

Bugs and requests

Duet Display

Reported bugs

3 issues
  • Incompatibility with certain software and drivers
  • Laggy performance and input delays
  • Unreliable connection and frequent disconnects

Requested features

4 requests
  • Improved resolution and scaling options
  • Better support for older devices and Windows
  • More customization and control over settings
  • Wireless connectivity without subscription

Shapr 3D CAD modeling

Reported bugs

3 issues
  • Unreliable performance after recent updates
  • Difficulty deleting or modifying existing designs
  • Inconsistent behavior when using the Apple Pencil

Requested features

6 requests
  • Add more affordable pricing tiers for hobbyists
  • Improve undo/redo functionality
  • Implement better file management and organization
  • Add support for importing/exporting more file formats
  • Enhance parametric modeling capabilities
Show 1 more
  • Introduce a one-time purchase option

In-app purchases

6 purchases

Duet Display

Subscriptions6
  • Duet Starter (Monthly)$3.991 Month
  • Duet Air (Monthly)7 Days trial$5.991 Month
  • Duet Pro7 Days trial$7.991 Month
Show 3 more
  • Duet Starter (Annual)$39.991 Year
  • Duet Air (Annual)7 Days trial$49.991 Year
  • Duet Pro (Annual)7 Days trial$79.991 Year
6 purchases

Shapr 3D CAD modeling

Subscriptions6
  • Solo Subscription14 Days trial$32.991 Month
  • Pro Subscription14 Days trial$37.991 Month
  • Business Subscription14 Days trial$59.991 Month
Show 3 more
  • Solo Subscription14 Days trial$249.991 Year
  • Pro Subscription14 Days trial$299.991 Year
  • Business Subscription14 Days trial$499.991 Year

Questions

Is Duet Display free?
Duet Display is free to download, with in-app purchases available.
Is Shapr 3D CAD modeling free?
Shapr 3D CAD modeling is free to download, with in-app purchases available.
Which has better reviews, Duet Display or Shapr 3D CAD modeling?
Shapr 3D CAD modeling is rated higher. Duet Display averages 4.4 out of 5 from 49K ratings, while Shapr 3D CAD modeling averages 4.7 from 34K ratings.
Do Duet Display or Shapr 3D CAD modeling have ads?
Duet Display shows ads; Shapr 3D CAD modeling does not.
Which is updated more often, Duet Display or Shapr 3D CAD modeling?
Duet Display ships an update every 3 weeks, and Shapr 3D CAD modeling every 5 days. Most recently, Duet Display was updated on November 5, 2026 and Shapr 3D CAD modeling on November 5, 2026.

Other comparisons