Personally, I am not a fan of unsolicited redesign efforts that I see around the web. The reason is most of these designs are solving problems that do not exist. With few exceptions, the redesigns are mostly focused on the visual look of the product with zero consideration to the product’s existing branding and address no issues of usability. So when I was assigned to redesigning an existing mobile app as a part of an interview process, I knew exactly what not to do (doing so probably wouldn't get me hired anyway)! The app I redesigned was YouTube app for Android.

Please note that the redesign of the YouTube app was done between March 2018 to April 2018. So some of the references may not reflect the current product anymore. However, it was interesting for me to see some of the issues I found were also addressed by YouTube in their updates.