Now optimized for the iPhone Duo with Apple Pencil (USB-C)
Sketch Anywhere in Concepts on iPhone Duo with Apple Pencil
Updated: November 12, 2026
Concepts is now optimized for iPhone Duo with Apple Pencil, so you can sketch, draw to scale and take notes right on your phone. Use the inner screen when you want more room to work on the Infinite Canvas, or the outer screen for a quick idea on the go. It works with Apple Pencil (USB-C) on iPhone Duo running iOS 27.2 or later.
A new screen shape is a chance to get the details right. For iPhone Duo we reworked Concepts' layouts, from the Gallery to the canvas toolbar, and those improvements reach every iPhone, with much more to come. We've been waiting for Apple Pencil support on a phone, and now with Duo and iOS 27.2, the iPhone is a realistic drawing device you can carry everywhere. We're thrilled to be there on day one.
Annelise Sandberg
“Living by someone else’s rules” concept sketch on the iPhone Duo by architect Jean Sebastien Malebranche
What Can You Do With Apple Pencil on iPhone Duo?
Everything you love about sketching in Concepts now fits in your pocket!
“The iPhone Duo just feels like a pocket notebook. While it can open, I did find myself making many quick sketches directly on the cover screen. Although it is shorter than most phones, that little extra width makes drawing on it more enjoyable.” - Jean Sebastien Malebranche
Sketch on the Infinite Canvas: Unfold iPhone Duo and enjoy endless room for your ideas. Zoom in to add detail, then zoom out to see the whole idea come to life.
Draw to scale: Turn on Precision and Snap to Grid to draw clean lines, shapes and measured layouts. Import a photograph and sketch ideas while on-site to check the spatial flow and layout of the space.
Drop in Objects: Open the Library to add furniture, people, trees, icons and symbols from your Object Packs. You can resize and recolor every Object to match your work.
Capture ideas on either screen: Use the outer screen for a fast note or thumbnail sketch, then open the phone to keep expanding your ideas on the larger inner screen.
Organize with Layers: Keep your floor plan, notes and markups on separate Layers so you can show or hide each one as you work.
A quick sketch in Concepts by architect Jean Sebastien Malebranche.
Who Is It For?
If you think with a pen, iPhone Duo and Apple Pencil give you a sketchbook that is always with you.
Architects: Sketch site notes, massing ideas and quick plans during a walkthrough.
Interior designers: Lay out a room with furniture Objects and mark up changes with your client.
Industrial designers: Capture product ideas and quick form studies the moment they come to you.
Technical sketchers: Draw clean, measured diagrams and details wherever you are.
Students: Take notes and mind map ideas while in class or on the go.
It's just as handy for teachers, note-takers, artists and illustrators who want to sketch without carrying a larger tablet or notepad.
Concept studies on the unfolded iPhone Duo by Jean Sebastien Malebranche
How Do I Start Sketching on iPhone Duo?
You need three things: an iPhone Duo on iOS 27.2 or later, an Apple Pencil (USB-C) and the latest version of Concepts.
Update your iPhone Duo to iOS 27.2 or later in Settings > General > Software Update.
Pair your Apple Pencil (USB-C) by following Apple's pairing steps for iPhone Duo.
Update Concepts from the App Store, or download it if you're new.
Open Concepts, start a new Drawing and pick up your Apple Pencil to sketch.
Your next idea doesn't have to wait until you're back at your desk. Update Concepts, pick up your Apple Pencil and start sketching on iPhone Duo.
Show us what you sketch on iPhone Duo. Send your work to support@concepts.app and tag us on Instagram @ConceptsApp. We love seeing what you make and cheering you on!
Frequently Asked Questions
Recommended
How to Use iCloud Drive to Sync Your Drawings
A quick tutorial to have a seamless experience across your iOS and iPadOS devices.
Furnish any Floor Plan in Minutes with the Furniture & Living Space Object Pack
Sketch rooms on the go and drag and drop in furniture Objects to check spatial flow of the space.
Bring Your Architectural and Landscape Designs to Life with Hand-Drawn, Scaled Figures
Take a look at the Background People Object Pack, a collection of 29 perfectly scaled mid-distance and background people.