if you are making a flowchart or something similar, draw.io should be decent enough to make a figure. Depend on what kind of figure do you want to make.

Hi,

Kindly refer the following link:

https://blog.prototypr.io/top-20-prototyping-tools-for-ui-and-ux-designers-2017-46d59be0b3a9

Balsamiq is an extremely popular graphical tool to draw user interfaces for your application easily. also you can use edraw software to draw technical diagramming like flowcharts, use case diagrams and etc.

Dear Avadhesh Kumar Sharma,

Attached herewith the links for Best tool/software to make complex figures.

I hope the information will help you.

With Best Wishes,

Samir G. Pandya

UI software for visual design, Adobe Photoshop. ...

UI software for mind maps, MindManager or XMind. ...

Rapid prototyping tools, Axure RP, Sketch or Mockplus. ...

UI software for dynamic design, AE (Adobe After Effects).

Thank you everyone for your valuable comments and suggestions.