When you are working on UI/UX design and you are using the Windows, don't worry about that because I have the app for you and almost of them is free (not paid). This is a best app for UI or UX design to make layout, wireframe, style-guide, userflow, flowchart, prototype, map, ios, android, etc.
Please, don't repeat the question again for me about good app ui/ux design for windows. I hope it's useful for you, and here you go:
Mockplus: https://www.mockplus.com/?r=grace
Adobe XD: http://www.adobe.com/products/experie...
Proto: https://proto.io
Flinto : https://www.flinto.com
Justinmind : https://www.justinmind.com
Mockflow: https://mockflow.com
Axure: https://www.axure.com
Marvelapp : marvelapp.com
Invisionapp : www.invisionapp.com
Balsamiq: https://balsamiq.com
