Ava fertility bracelet

Hi all. I'm 30 years old. Suffered 2 miscarriages, both my fiance and I have gotten checked out. Blood tests gave no abnormalities, his swimmers are good. I did a saline ultrasound and hysteroscopy and Dr said everything looked textbook and great. With nothing physiologically right now that we have been able to attribute to anything we decided to get the ava fertility bracelet hoping that maybe we were just off on our days. Has anyone used it? Were the results different than what your normal apps say for timing? Have you had luck with it? Thanks!