Infinity Sketch

Infinity Sketch

Grid-based schematic sketching

15 ratings
12 reviews
Free

Details

  • Released
  • Updated
  • October 8, 2024
  • August 17, 2026

Features

Infinity Sketch screenshot #1 for iPhone
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Infinity Sketch screenshot #7 for iPhone
Infinity Sketch screenshot #8 for iPhone
Infinity Sketch screenshot #9 for iPhone
Infinity Sketch screenshot #10 for iPhone
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ipad
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About

Create precise schematics with a customizable grid and line editing system. Seamlessly integrate images as backgrounds or symbols to enhance your workflow. Enjoy a practically infinite canvas for unrestricted creativity, all offline and completely free.

Customizable grid for precision
Image import for backgrounds/symbols
Practically infinite canvas
Offline functionality
Apple Pencil and finger drawing support
Combines freehand and grid lines
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What's New in Infinity Sketch

2.1

August 17, 2026

InfinitySketch has a server now — free, open source, and yours. Run it on a Mac, Linux or Windows machine, and your sketches gain three things: DRAW WITH AN AI The server speaks MCP, so an AI assistant on your computer can see your sketch and draw in it — strokes, fills, text, images, grids, even snapped to your document's own grid lines. Edits appear live on your canvas, use your current pen, and every one is a normal Undo step. A LIVE WEB PAGE Open the server in any browser and watch your sketches update as you draw. YOUR DEVICES, ONE SKETCH Documents sync live between your iPads and iPhones. It's local-first: every device keeps a full copy, so losing the server never loses a sketch. No account, no cloud — nothing leaves your network. SCAN TO JOIN The server prints a QR code when it starts. Scan it with your camera and InfinitySketch asks to join — no addresses to type. Server documents appear beside your local files with previews, and any document can opt out of sync in Document Settings. Concurrent edits merge element by element; a genuine conflict is backed up rather than overwritten, and undo stays coherent across devices. Get the server (free & open source, with a ready-to-run download for Windows): https://github.com/circuitshepherd/infinitysketch-server

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User reviews

Where are all the symbols?

Where are all the symbols?

Response from developer

Thanks for giving Infinity Sketch a try — sorry it wasn't what you expected. There's no built-in symbol library, and that's on purpose. The app is built around *your* hand-drawn symbols combined with straight, grid-snapped lines — that mix is what gives the sketches a clean but human look, instead of the stamped-clipart feel of a symbol palette. So the symbols are the ones you draw. You don't have to redraw them every time, though: • Draw a symbol once, then copy and duplicate it anywhere on the canvas. • Paste images from the clipboard as symbols or backgrounds — a standard symbol set from anywhere works fine as a source. • New in 2.1: run the free server and an AI assistant can draw into your canvas directly, including repeated symbols snapped to your document's grid. If a built-in library is genuinely what would make this useful for you, tell me which set — electrical, logic gates, plumbing, flowchart — and I'll take the request seriously. Feedback like this is how the app gets its roadmap.

Can't find basic set up such as Grid Size.

The basic document settings that one would expect to set up are missing.

Response from developer

Hi! Just tap the “Side Panel” icon — you’ll find fully configurable grid settings there ;)

'No copy & paste

This is not useable

Response from developer

Hi, copy and paste between documents via the system pasteboard is definitely possible! After selecting, tap "Copy selection to pasteboard" in the menu. In the destination document, tap the "Insert image" button to paste.

It’s surprising

You download it, it’s done In seconds and once you open it it’s not bad at all!! 👌

Response from developer

Thank you very much 🙂

pretty cool

I like pretty much everything about this app except for the UX around pasting in images. You can only paste in an image if you first take a screenshot of it, which seems weird. why add extra unnecessary steps? Why not just allow people to paste things in?

Response from developer

Hi, actually this should work. For example: You can copy images from your Photos app to the system pasteboard and paste them into Infinity Sketch. Please reach out to me on X if you need further help.

Developer apps

FAQ

What is Infinity Sketch?

Infinity Sketch is a free application for iOS devices designed for grid-based schematic sketching. It offers a customizable grid, line editing, and image integration to help users create precise diagrams and designs.

Is Infinity Sketch free to use?

Yes, Infinity Sketch is completely free to use. It has no hidden charges, no in-app purchases, and no subscription fees, making it accessible for all users.

Does Infinity Sketch require an internet connection?

No, Infinity Sketch works entirely offline. You can sketch anytime, anywhere without needing an internet connection, ensuring uninterrupted creativity.

What devices does Infinity Sketch support?

Infinity Sketch is available on iPhone and iPad. It supports both Apple Pencil on iPad and finger drawing on iPhone and iPad, adapting to your preferred input method.

Can I import images into Infinity Sketch?

Yes, you can seamlessly paste images from your system's pasteboard into Infinity Sketch. These images can be used as backgrounds or as symbols to enhance your creative workflow.

How often is Infinity Sketch updated?

Infinity Sketch was last updated on December 23, 2025, with version 1.16. This indicates a commitment to ongoing development and improvements for the application.

What is the age rating for Infinity Sketch?

Infinity Sketch has an age rating of 4+. This means it is suitable for children aged 4 and above, making it a safe tool for younger users interested in design and drawing.

How does Infinity Sketch compare to other drawing apps?

Infinity Sketch differentiates itself with its specialized grid-based system for precise schematics and its seamless image integration. Its completely free and offline nature also sets it apart from many freemium or subscription-based alternatives.