Trace is THE architecture and design app for EVERYONE. It’s 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, designers, interior designers, illustrators, or members of any creative culture, it helps you create intelligent sketches and drawings to meet all your design needs. Draw on top of PDFs, maps, photos, images, drawing sets, background templates, and more with extraordinary resolution 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.

Trace has been featured by Wired, Dwell, Fast Company, ArchDaily, Cool Hunting, Dezeen, MacLife, Core77, designboom, Inhabitat, dexigner, Architectural Record, Archinect, Gizmodo and many more.


• 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

• AR PERSPECTIVE FINDER: Set grids in REAL space
• SCALE: Draw and measure in metric or imperial
• MAPS: Instantly draw over any site to scale
• STENCILS: Custom entourage and more
• PERSPECTIVE GUIDE: Auto draw to vanishing points
• TOOLS: Ruler, triangle, protractor and more
• MULTIPLE PAGE PDFS: Markup, order and share
• MOVE PAPER: Moves like real trace paper
• LAYERS: Copy, mirror, lock and more
• EXPORT: Send sets, images and PDFs
• FOLDERS: Organize and save your work

• PENS AND BRUSHES: A variety of life-like options
• SCALE PEN: Smart line weights for precision drawing
• RULER: Draft straight lines to scale
• EXPORT: Effortlessly send or post drawings or sets
• PAPER: Choose yellow trace, white vellum or black
• IMPORT: Access photo library, Camera, PDF, or Cloud drives
• EDIT: Manage layers & iterate drawings
• OPACITY: Adjust to highlight or hide information
• COLOR: Custom pen palettes for multiple uses
• TEMPLATES: Custom backgrounds for multiple uses

Morpholio TracePro subscription plans are available in the following options:
•TracePro monthly for $7.99
•TracePro annually for $19.99
Subscriptions will be charged to your credit card through your iTunes account. Subscriptions are automatically renewed unless cancelled at least 24-hours before the end of the current period. You will not be able to cancel a subscription during the active period. Manage your subscriptions in your Account Settings after purchase.

Privacy policy:
Terms of use:

We would be thrilled to have Morpholio Trace be a part of your creative process. Designed to be beautifully simple, clean and familiar in its canary yellow “trace paper” background, you can use trace to build an idea, as well as simplify many other forms of feedback in the design 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.

What's New

Version 3.5.51

Welcome to the best version and update yet. We hope you enjoy the new features, improved performance and bug fixes you helped us discover.

Ratings and Reviews

4.6 out of 5

530 Ratings

530 Ratings

I'm beta testing the new Morpholio Trace


Im not a pro at it by any means but I gave it a five. It's a little complicated at first, in comparison to some others and I really don't recommend it for the iPhone because it is really a professional app that any designer could benefit from. There is a learning curve. There are more simple apps that are probably better for beginners. I give it five stars because it is great in the fact it is so clean in its ui and for the short time Ive been using it, I believe it is perfect for someone to hold their best work. I think it would be a wonderful add for someone that is a professional designer of any kind. It's has to be a little complicated in order for it to have the features that it is packed with. I think once I learn more, and can intuitively know all of the tools and changing them when I need to, I will pay for it with my design projects. So if you know Morpholio well, and have the app mastered, you will be just as happy with the up dated version. You have a lot to look forward to. I'm going to play more with this app. One thing I wish I knew how to send my stencils to creative cloud, or to render a Psd file. It probably is able to be done but I am a novice in that department. Such a beautiful app

It’s an ok app

Ounrg kundve

First off, I am not an architect, but I work in the construction field and have to work with architects a lot. That being said, this app is definitely designed by architects. You can tell by the focus on the art rather than precision. That’s not necessarily a bad thing. If this app had the ability to draw lines from typed in lengths, snap dimensions and angles, it would be perfect. The sample plan is a fine example, there is no actionable info on the whole drawing, it covers the gap between client and construction plans, no dimensions or angles called out. I am still giving the app a better than average star count because it is a good app, just be aware that it is geared towards concept design more than anything that is accurate.



I’m not an architect but I still wanted a simple app to help me plan a room in a small apartment. I thought this would let me rough sketch a scaled-down room, input measurements for furniture I own & find the most efficient layout. If this sounds familiar, move along. This horrid app is not user-friendly... unless you’re perhaps, a professional architect already familiar with similar programs. There are no instructions for use and no help tools. I tried to figure it out on my own. I used the ruler tool to draw a straight line (aka a wall), in trying to find out how to reposition the ruler to form a 90 degree corner, the ruler tool disappeared and tapping on the ruler tool button does not bring it back.
The app developer should at least have included some sort of help section or include some sort of hint that this isn’t geared towards the average Jane/Joe just trying to map out a single room.

Developer Response

Dear Sweetviolet79,
First, we are so sorry to hear this and we want to assure you our intent is to make Trace as user friendly as possible. This can sometimes be a challenge with complex functions, but please know we are trying hard to achieve it. Per instructions, we will seek to make this even more clear, but they exist by hitting "?' button as well as in the settings. You should have also received a "user guide" in your welcome email.
With that said, your points are important as are our users and we want to fix this for you. If you email us a we will personally find a way to walk you through everything you need. We hope this is helpful.


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Morpholio LLC
134.7 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
Age Rating
Rated 4+
© Morpholio LLC
In-App Purchases
  1. Trace Pro Subscription $19.99
  2. Trace Pro Subscription $7.99
  3. Grids Template $1.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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