A blazing-fast, native Sketch replacement—perfect for anyone who prefers offline UI design.
What is Lunacy
Lunacy is a free graphic-design tool published by the stock-icon site Icons8. It mirrors the macOS-only, paid app Sketch in look, feel and shortcuts, while AI tricks and a built-in asset library speed up day-to-day work.
Feature highlights
- Near-zero learning curve: UI, hot-keys and workflow are almost identical to Sketch; full Chinese UI available
- Native .sketch support plus import/export for Figma and Adobe XD—play nicely with any team
- True desktop app (Windows, macOS, Linux) written in C++, so it’s faster and lighter than Electron wrappers
- Cloud and local collaboration baked in
First-hand experience
Figma is web-only (and slow in China), while Sketch is Mac-only and paid. Local alternatives such as MasterGo or “Js Design” are online too, and their Chinese-font handling still lags behind native apps. Lunacy feels exactly like Sketch—I opened my old files and kept working without thinking. It even borrows smart touches from Figma, such as on-canvas corner-radius handles and auto-expanding layer folders.
At last—open Sketch files on Windows
Before Lunacy, a designer sending a .sketch file meant everyone else had to buy a Mac or run a Hackintosh. Lunacy runs on Windows and Linux, so the whole team can view, edit and export the same source file.
Download & pricing
Icons8 is a freemium stock site, but the Lunacy app itself is 100 % free for any personal or commercial use, with no team-size limit. AI extras (up-scaling, auto background removal) and hi-res/vector assets inside the panel require a paid Icons8 subscription—an optional perk, not a core lock-in.