Her YC application called Softcup a competitor to watch. By August she owned it.

Flex applied to YC in 2016 with one founder, $225,000 raised and nothing shipped. The form named Softcup, the only other menstrual disc, as a rival to watch. By August Flex owned it. Then came 30,000 stores, a bank collapse and 185 million discs. The form is below.