Yes. RoughSketch is free to use. There are no paid tiers and no ads.
You don't need an account to sketch locally. Your work stays in your browser. Sign in with Google when you want to autosave to Drive.
RoughSketch uses Google's narrow drive.file scope. We can only see files you create or open through RoughSketch. The rest of your Drive stays private.
RoughSketch is an independent project built on the open-source Excalidraw editor (MIT-licensed). It is not affiliated with or endorsed by Excalidraw or Excalidraw+.
Recent versions of Chrome, Edge, Firefox, and Safari. Older browsers can still load the editor, but they may miss features like offline drafts.
Yes, once you're signed in: the editor menu's Import .excalidraw command opens the file as a new diagram in your own Drive. It's parsed locally in your browser and never sent to our servers. Dropping a file onto an open diagram replaces that diagram's contents instead of creating a new one, so use Import when you want to keep both.
Yes. The export menu can save your diagram as PNG, SVG, or .excalidraw. Everything runs in your browser, so the file downloads straight to your device.
Yes. RoughSketch is a Progressive Web App, so the editor keeps working after the first load. Local drafts stay safe in your browser and sync to Drive automatically when you reconnect.
Yes. The editor is responsive and runs in any mobile browser. If you use it often, add RoughSketch to your home screen for a full-screen view.
Yes. RoughSketch is also a remote MCP server at https://roughsketch.app/mcp: add it as a custom connector, sign in with Google, and the assistant can search, read, preview, create, update, rename, arrange and trash sketches that live in your own Drive. Setup steps for each client are at https://roughsketch.app/connect. It can only see files you create or open through RoughSketch — the rest of your Drive stays private. Unlike the editor, the assistant's requests run through our server, which reads and writes the sketch on your behalf and, when it asks to see one, caches a rendered preview for up to 24 hours; https://roughsketch.app/privacy has the detail. An edit to a sketch's contents is refused if the sketch changed since the assistant last read it, and trashing a sketch is recoverable from Drive.