Can I throw 90 mph in disc golf?

In this video, I try to see what the fastest I can throw a disc is. I don't own a speed gun so I had to get creative with how I tracked the speed. I did this by using an app on my apple watch called "arm speed". The app also works well for those who play baseball but I'm not entirely sure I would recommend it. It seemed to give some spotty readings that didn't fully make sense.
The typical range that a disc golf pro throws in is 50-70 mph with the world record being around 90 mph held by Simon Lizotte. Let's see if I can get close to that speed.