Lekh Diagram empowers you to express your idea on iPad and iPhone simply by sketching shapes with your finger.

Lekh Diagram can be used to make diagrams, UI Wireframes, flow chart, organizational chart, business process diagram, venn diagram, mind maps and any kind of illustrations.

Lekh Diagram’s powerful and unique shape recognition engine can recognize various shapes and connections. Draw shapes and connections by dragging your finger on ipad and the Lekh Diagram will recognize drawing and will convert them magically into beautiful shapes.

In addition to basic shapes (which can be drawn by sketching), Lekh Diagram also provides a library of predefined shapes. Shapes from library can be easily added to canvas.

Once a shape is drawn, it can be modified and customized. Use standard pinch-zoom gesture to zoom shapes and standard rotate gesture to rotate shapes. The Lekh Diagram’s unique vertex handle will allows you to precisely move vertices and control points of shapes.

The Lekh Diagram can recognize drawing connections between shapes. Draw two shapes and connect then whatever way you want simply by drawing the connection.

For very highly customizable drawing, the Lekh Diagram supports bezier curves. It can recognize bezier curve drawing and it also allows you to move the control points precisely.

The Lekh Diagram can recognize drawing and erasing of arrow at the end of line, curve, and open polylines.

Images can be inserted into your drawing from from photo albums.

And finally you can export and share your drawing in various formats. You can either email or upload to Dropbox. The supported formats are jpg, png, pdf, svg and lekh.

There is a limitation of exporting diagram in free version. In App Purchase of export feature will enable exporting of diagrams.

We appreciate every feedback we receive. Your constant interest and improvement ideas keep the updates coming.

Check out for more info.
Visit our youtube channel for video demos.

What’s New

Version 2.2.11

Adding a setting option to not reduce resolution of inserted image

Ratings and Reviews

3.9 out of 5
11 Ratings

11 Ratings

Culmac ,

Pretty decent

I would love to have a basic electrical symbol library. Like contacts, relays, switches etc. This could be another in app purchase :-)

_narmar ,

Best app in class

Searched dozens of systems / flow chart apps and this is by far the most powerful and intuitive.

Been using this app for a couple weeks and love it. Just hope the app still continues to get updates as there are a few areas for improvement:

• Apple Pencil 2 support of double tap feature!!!
• folio keyboard support for more keyboard shortcuts
• Ability to selectively group and modify objects that are hard to select in one pass...

Honestly, with the improvements above, it will take the app to the next level

pysecuser ,

Increase the default zoom

Simple and useful app. Please increase default zoom of a new diagram to fill entire canvas on ipad.


20.7 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Export Diagrams $2.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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