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Concepts

An app that lets you sketch on an endless canvas and edit every line.

Photo & videoSketching and paintingIllustration on iPadFree plan+2 more

What Concepts does

Concepts is a sketching app with an infinite canvas and vector lines, so you can move, bend and resize strokes after you draw them. It is popular with designers, architects and anyone who plans ideas visually. There is a free version and paid plans.

Infinite canvas with grids and paper types
Vector strokes you can move and resize
Pressure, tilt and speed-sensitive tools
Scale and measurement tools
Image and PDF import, more export formats with a paid plan
Apps for iPad, iPhone, Android and Windows

Concepts feels more like a giant sheet of smart paper than a painting app. The canvas never ends, and every stroke is a vector, so you can nudge it, slice it, select it and change its size without it getting blurry.

The pens and pencils respond to pressure, tilt and speed. You get COPIC colors plus RGB and HSL wheels, grids and paper types, object libraries, and scale tools that measure real-world sizes, which product designers and architects like. You can import images and PDFs. The free version exports JPG, and paid plans add more formats.

The free version gives you the infinite canvas, a set of tools, five layers and JPG export. The subscription adds 200+ brush and object libraries and works across devices. If you prefer paying once, Essentials adds unlimited layers, editing tools, custom brushes and PSD, SVG and DXF export, but only on the platform you buy it on.

It is not the app for rich painted illustration. It shines for sketches, diagrams and design ideas.

Alternatives to Concepts

Adobe FrescoFree drawing and painting app with brushes that blend like real paint
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ProcreateA pay-once painting app for iPad and Apple Pencil
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Infinite PainterPro painting tools on Android and iPad for one purchase
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Linea SketchA simple sketch app that cleans up your rough lines
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ibis Paint XHuge free drawing app with over 130,000 brushes
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SketchbookA clean, free sketching app with a cheap one-time upgrade
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Who it's for

Designers, architects and engineers who sketch ideas
People who think on big mind maps and boards

Skip it if: Painters who want realistic paint and texture.

Pricing

Free plan
Free, paid from $4.99/mo

Concepts is free with five layers and JPG export. The Everything subscription is $4.99 a month or $29.99 a year, with a 7-day free trial. Essentials is a one-time $39.99 that covers the platform you buy it on.

Prices can vary by country. Checked 19 Oct 2026.

What people like

  • Every line stays editable
  • Useful free version
  • One-time option if you dislike subscriptions
  • Works across Apple, Android and Windows

Watch out for

  • Free version is limited to five layers and JPG
  • One-time purchases only cover one platform
  • Not built for painted illustration

Want a sketch space that matches how you think? Build your own.

Describe your app idea and Bilt builds it. Free to start, on your phone in minutes.

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Try this idea: “a whiteboard sketch app where I draw on an endless canvas, drag my drawings around, and group ideas into little clusters”

Questions people ask

Is Concepts free?

Yes, there is a free version with the infinite canvas, five layers and JPG export. Paid plans add more tools and libraries.

Does Concepts work on Android and Windows?

Yes. Concepts is on Google Play, and the developer says there is a Windows version too.

What makes Concepts different from Procreate?

Concepts uses vector lines on an infinite canvas, so it suits sketches and design ideas. Procreate is a painting app with a fixed canvas.