Start with pencil and paper sketches before moving on to digital tools such as:
- Microsoft PowerApps (may also be included as part of Office)
 - Adobe Xd
 - diagrams.net (formerly draw.io)
 - UXPin
 - Figma
 - Balsamiq
 - wireframe.cc
 - app.moqups.com
 - invisionapp.com
 - sketchapp.com
 - Axure
 - Justinmind
 - Marvelapp/POPapp
 - iRise
 
To use PowerApps go to Microsoft's Office software-as-a-service site and login with your @ucdconnect.com account which should already be provisioned via UCD.
https://www.office.com/