Lekh - Ultimate Diagram Maker for iPad, iPhone, Android, Mac & Web
Draw diagrams effortlessly by sketching directly on your touch screen with Lekh. Draw naturally, as if on paper, and watch as our smart drawing feature transforms your sketches into precise shapes and connections. It’s the ultimate diagram maker that perfectly blends intuitive design with powerful functionality.
Check our demo video
A perfect diagram maker at your fingertips
- Optimized for touch screens, yet functions flawlessly on the web with keyboard and mouse.
- Draw diagrams such as flowcharts and block diagrams simply by sketching in Smart Drawing mode.
- Use the shape library to drag and drop shapes for drawing diagrams such as UML, BPMN, ERD, DFD, Network, ArchiMate, UI Wireframes, and more.
- Works both online and offline.
- Export your diagrams in formats such as JPG, PNG, SVG, PDF and LEKH
Versatile diagram maker with extensive features
- The real-time collaboration feature allows you to collaborate with your team in real time.
- You can draw diagrams offline without an internet connection.
- Free hand drawing feature makes it a perfect whiteboard.
- The most intuitive flowchart maker.
- A network diagram maker.
- A perfect UI wireframe tool.
- Process mapping, BPMN and business diagramming tool.
- Connect an AI assistant and let it draw for you — AI diagramming with ChatGPT, Claude or your coding assistant.
Draw any diagram with ChatGPT or Claude
Ask your assistant and get a real, editable Lekh board, not a picture.
“Draw our services: web app, API, Postgres, Redis, and the queue between the API and the workers.”
“Show the OAuth handshake between the browser, our API and the identity provider.”
Free on every Lekh plan.