Morpholio Trace - Sketch CAD 4+

Design & Architecture Drawing

Morpholio LLC

    • Free
    • Offers In-App Purchases



Featured as ‘Best Apps’ by AD, Wired, Architect & many more, Trace merges the beauty & speed of sketching with the intelligence of CAD. Try an entire month free today!

Trace is the ALL-IN-ONE design & architecture app. Awarded “Best App,” Trace is a truly unique drawing tool that allows you to easily develop ideas in layers, communicate via drawing markup, and work fluidly through ALL phases of the design process. Ideal for architects, interior designers, landscape architects, industrial designers, urban planners, lighting designers, engineers, or members of any creative culture, Trace lets you create intelligent sketches & drawings to meet all of your design needs. Draw on top of images, PDFs, maps, photos, drawing sets, 3D models, background templates, and more TO SCALE using exceptional designer tools, brushes and pens. Bring new life to your design process and transform your workflow with the ease, flexibility and the magic of digital hand sketching.



• Develop ideas, options & concepts
• Sketch buildings & objects
• Layout home, office & landscape renovations 

• Drawing sets & PDFs
• Construction site photos
• Presentations, renderings or images

• Floor plans, sections & elevations to scale
• Site plans & landscaping 
• Illustrations & presentation images

• Make & export drawing sets
• Scale & measure drawings or images
• Organize by project


-Up to 5 Projects
-Basic Pens & Brushes
-Layer Manager
-Scale Pen
-Paper Unbound
-Export Images, PDFs or Sets
-Sketch Recording
-Instant Scale
-Scale Ruler
-Color Palette Maker

Also Includes
-All Basic Features
-Full Pens & Brushes
-Up to 20 Projects
-Magic Lasso
-Super Ruler
-Scale Triangle
-Scale Protractor
-PDF Markup and Manager

Also Includes
-All Basic & Plus Features
-Unlimited Projects
-Perspective Tools
-Maps to Scale
-Smart Fill
-AR Perspective Finder
-AR SketchWalk
-Sketch Over 3D Models
-PSD Export


One subscription gives you access to both your iPhone and iPad.

Work like a PRO. Morpholio Trace subscription plans are available in the following options:

All payments are controlled and managed by Apple. If you are offered and activate a free trial, your Apple ID account will be charged only at the end of your free trial period for the subscription unless canceled at least one day before the end of the free trial period. Your Subscription will automatically renew and your Apple ID account will be charged unless your Subscription is cancelled at least 24-hours before the renewal date. No commitment. You can cancel your free trial as well as manage or cancel your Subscriptions at any time by going to your Apple ID account in the Apple Settings app.

Privacy policy:
Terms of use:



We would be thrilled to have Morpholio Trace be a part of your creative process. We hope you enjoy Trace and if there are any specific ways it could be improved for your use, please send us your feedback at

What’s New

Version 5.37

This new watercolor brush, NEW watercolor brush, and, by the way: new watercolor brush.

We hope you enjoy this update and we want to thank all of our amazing users for your continued support.

Ratings and Reviews

4.6 out of 5
1.2K Ratings

1.2K Ratings

Kpdgn ,

Trace is the digital, drawing pad! - KAPD

We have used Trace since it first appeared! KAPD use Trace daily and constantly in a professional capacity to develop freehand and scale preliminary concepts, through to final presentation works. Trace has proved to be a highly stable platform to develop projects and store detailed drawings on file. Files are revisited, switched, erased and altered constantly with layers absorbing more and more levels of input and detail. Trace is intuitive and allows the user complete freedom to work. Had a glitch recently that required an email to the Morpholio support team. The response was by return. It identified the problem and a resolve was forwarded. Clean, efficient, prompt, professional. It is important that Morpholio Trace, doesn’t lose its original baseline - the simplicity of use of a drawing pad, but there are important updates that Morpholio may make to Trace that will make it an even sharper, fine tuned, drawing instrument in the future. KAPD.

jsoeirogoncalves ,

The paperless freedom of hand sketching with the precision of digital drafting, at last!

Although being a beginner with the app, the potential of Morpholio is extraordinary! For the first time I was able to draft new proposals from the beginning, combining the freedom of hand sketching but in a paperless environment. And then you have layers to sketch multiple variations, areas measured almost automatically, stencils with multiple objects to quickly refine your drawings, a whole world of possibilities! I just regret now not having the larger iPad Pro, since you just feel you want a larger and larger screen. A very intelligent and recommended app for every architect!

aspgirl21 ,

Used to have so much potential, but now...

I got this app because I wanted to be able to actually use pictures I’ve saved on my iPad & allow me to actually trace the pictures without the image wobbling all over the place or being drawn/painted over in the process. On my old iPad, this app did exactly that. Until I was forced to get a new iPad when the old one broke. I downloaded the app again, hoping it would be no different ... boy-oh-boy was I wrong about that! I can’t make heads or tails of it now & I can no longer keep an image still long enough to trace a straight line, never mind a whole picture! All I wanted was to do a personalised picture, to put on a “Get Well” card for my 9 year old cousin (who’s been struck by a car & will likely need surgical pins), but now I can’t draw it for him. I’m very disappointed, to put it politely. Sorry, but I’m going to be deleting this app, as I simply cannot use it. And no offence, but I honestly won’t be recommending this to anyone; not after my own dissatisfaction with the app. SMH. 🤨

Developer Response ,

Dear Aspgirl,
Wow. We are soooo sorry to hear this. Please give us a chance to make this better for you. Can you email us at and we will take care of you.


13 Oct

Learn how to draw a beautiful floor plan like a Pro with these 5 interior drawing tips, and get your work featured.

13 Oct

Learn how to use true solar positions merged with Apple Maps for effortless shadow drawing & design in Trace Pro.

19 Oct

SketchUp & Morpholio have joined forces using USDZ. Now, learn how you can draw your aerial perspective over 3D models.


Trace Pro Subscription
Unlimited everything: projects, tools & more
Free Trial

App Privacy

The developer, Morpholio LLC, 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 Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • Contact Info
  • Identifiers
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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