In December 2019, I broke the last bone in my left ring finger. I had a surgery done which put 2 pins in my finger for four weeks. During those four weeks, I was in a full arm cast from below the elbow to my hand, preventing movement in my fingers and wrist.

After I got my cast off (and pins removed), I had lost some range of movement in my fingers and wrist, requiring physical therapy. In my case, that was holding stretches on different joints for 5 seconds at a time, so I made this timer to help me time the stretches.

Hopefully, others will find this useful, too.