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Concepts: Smarter Sketching, Design & CAD for Architecture & Illustration

By TopHatch

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The future of professional design is here: Concepts intelligently combines paper + pencil with powerful vector manipulation. Make quick sketches, beautiful illustrations, and precise drawings with ease and style.

You’ll love the infinite canvas and layers, flexible multi-touch shape guides, vector manipulation with advanced transforms, and the ability to export your sketches to powerful standardized formats like SVG, PSD and CAD (DXF). Concepts sets the standard for productivity in the mobile era.

Concepts saves you time and enhances your creative capability. Use simple gestures like a tap-and-hold to select anything, and configurable shortcuts for unlimited undo, making adjustments, and accessing layers or the iconic COPIC Color wheel.

Concepts is optimized for the iPad Pro with Apple Pencil, and works brilliantly on iPad and iPhone so your sketchbook is always with you.

With our unique approach to precision sketching, amazing Architects, Illustrators, Professional Designers and Makers like you have designed hospitals and boats, landscapes, illustrations and game art, outlined major film storyboards, even crafted award-winning quilts, greeting cards, furniture, robots and drones!

Unlock the full power of Concepts with the Pro Pack:
- PRECISION TOOLS. Bring the power of CAD to your sketches through multi-touch shape guides, automatic measurements and snap-to sketching. We’ll do the math for you.
- ADJUST ANYTHING. Tap-and-hold any stroke or group to move, stretch, smooth, copy, delete, or change ink weight and color.
- ADVANCED TRANSFORMS. Distort, Perspective Warp and Skew. Concepts is the only app on iOS that provides the full desktop-class set, and does so with an incredibly simple interface.
- INFINITE LAYERS. Seriously. View them without losing context.
- POWERFUL EXPORTS. Send high-resolution (300dpi+) PNG, vector (SVG), CAD (DXF), Adobe Photoshop (PSD), and standard formats anywhere.

If you’re not ready to go Pro, the basic app includes:
- ELEGANT, CLEAN INTERFACE. We get out of the way, so you can focus on your sketch work.
- INFINITE CANVAS, SHARP ZOOM & ROTATION. Also Portrait and Split View multi-tasking.
- 5 LAYERS with intelligent separation.
- IMPORT IMAGES. Learn by tracing, or mark up images with notes to give feedback to coworkers.
- UNLIMITED PROJECTS. Never, ever stop sketching.
- COPIC COLORS. The beautiful color wheel will make you say ‘wow’.
- BLUETOOTH STYLUS SUPPORT. Connect your favorite stylus from Apple, FiftyThree, Adobe, Adonit, HEX3, Pogo or Wacom. Includes Palm Rejection. Full support for Apple Pencil on iPad Pro.
- GORGEOUS VECTOR BRUSHES. Pencil, Pens, Area Fills, Marker and Airbrush. All free.
- ADJUSTABLE PAPER with real-scale paper sizes, layout guides + rulers, transparency, graph paper and isometric grids.

Vector object packs for architecture, landscaping, UI design, industrial design, auto design, fashion design, sketchnoting, visual thinking and more are available separately via the in-app store.

Concepts is the pro-level design sketchbook that helps you break free from the desktop.

We're dedicated to quality and we update often. If you get stuck, chat with us in-app, pencil a note to, or find us anywhere with @ConceptsApp.

COPIC is the trademark of Too Corporation. Special thanks to Claudine Zafra, Lasse Pekkala and Erica Christensen for the architecture and illustration cover sketches!

What's New in Version 4.2


This update will save you so much time.

- PRE-MADE, ROYALTY-FREE OBJECTS. Hundreds of them are available for lightning quick drag-and-drop creation - from basic shapes and body forms to UI helpers, flowchart symbols and architectural stamps. Sample a few from each pack or pick them up via in-app purchase.
- ADVANCED TRANSFORMS are so very powerful. Distort, Skew, Perspective Warp, and Stretch your way around any selection / image / text, including all those Objects we mentioned. Yep, we’re the first app on iOS to offer the full set of desktop-class transforms. Tap any corner point to distort, any two points to warp/skew, and double-tap the selection to reset.
- DRAG ANY SELECTION to the Objects menu to copy it to your clipboard. It’s really fast.
- SCALE YOUR LINE WEIGHTS. In other words, lines can now get bigger or smaller with a pinch. While a selection is active, use the new popup menu to cycle through Stretch and Scale options.
- DID WE MENTION OBJECTS? We’ll be adding new packs at your request, and upgrading existing packs as we find more useful objects that fit. Tell us what you want!

How do the new features work? We’ve made videos! Check our YouTube channel by clicking the Videos link on the app’s help screen.

Concepts is getting better all the time, and your help is critical. Please let us know what you think of Objects and Transforms, and leave a lovely five-star review. Then, join us on our social pages for tips, inspiration, and good conversation.

Ben, David, and the Concepts Team @ TopHatch


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Customer Reviews

More amazing than ever.

I'm an illustrator and have used Concepts ever since it came out. With every update, it has grown exponentially in usability and style. Its smoothness and unlimited adjustment and layering have spoiled me from using other art apps though I've tried them all--I feel like I can trust the app with my personal creativity, even though I'm traditionally a paper and ink girl.

But I am blown away by the power in this new release. The transforms are so easy--shadows, proportions, angles etc are now like serious play-doh. I can put a finger on a pre-created sketch and it moulds to my whim. New dimensions at my fingertips, literally.

And the objects are cool. Again, thoughtful in their style and purpose. I don't mind paying a bit for something that saves me effort and time compared to the crazy subscription rates everyone else charges for less quality/ability. Especially if it keeps my favorite app alive. They deserve it for all their work. Long live Concepts!


This version is awesome! It's great for creating mind maps easily and effectively. I think the pricing for objects is just right (don't think they are being greedy at all...have you seen pricing on design programs, yikes!). I like that I can pick which objects I want since not all of them are useful to me, but may be for others. I think the developers have done a good job in giving customers the tools we want with the capabilities of an iPad. Keep up the good work! With a few more tweaks and tools this will be a perfect design tool.

Must have app for all industrial designers

This app is amazing and the reason why I bought an iPadPro.

I am an industrial designer and Concepts gives me access to all the needed sketching and drafting tools but I need such as pen, pencil marker, Copic colors, guides lines and guide tools including box ellipse line and angle guides.

Everything is vector based so you can at anytime adjust each individual stroke for example with color, stroke size, layer and even tool type. This is an incredible ability for fast and productive sketches and sketch revisions.

The new update also offers much more advanced transformation and deformation tools for perspective distortion.

Designs can be exported as Images or vectors to be send to Photoshop Illustrator and even AutoCad

I also teach Industrial Design and use this exclusively in my sketching demos and lectures. It's vector based nature just beats any other pixel based demo tool.

Concepts: Smarter Sketching, Design & CAD for Architecture & Illustration
View In iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Productivity
  • Updated:
  • Version: 4.2
  • Size: 58.0 MB
  • Languages: English, Finnish, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
  • Seller:

Compatibility: Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. Pro Pack (All Devices)$7.99
  2. Pro Pack [Legacy]$7.99
  3. Pro Pack (iPhone Only)$3.99
  4. Shape Library$1.99
  5. Precision Toolkit$1.99
  6. Images & TextFree
  7. Upgrade to Pro Pack$5.99
  8. Layers & Adjust$2.99
  9. iPhone to iPad upgrade$3.99
  10. Static Perspectives$1.99