This girl received a new toy for Christmas:

Our Nebraska friend Tom highly recommended this meat thermometer last year and I was very excited to finally use it Monday night.  I needed to practice with the new technology (it works on a phone app) before summer, so Banjo Man found a sale on beef tenderloins

We were all set for a perfect medium rare experience.

I wish I could say I succeeded, but I didn’t. I’m not sure where I went wrong, but I followed the directions on my phone, removing the steaks (at 135 degrees) from the pan and letting them rest as instructed by the app.  They kept cooking while resting, as steaks do, and ended up as “medium”.  Where did I go wrong?  Did the Meater Plus 2 thermometer steer me wrong or was this user error?

I’m open to suggestions.