Do any of you ladies use this app as your birth control?

I do not want to use medicinal birth control such as the pill or patch.

My husband and I want to consider withdrawal but I do not want him to do that either. So I was wondering if any of you ladies abstain from sex during your ovulation and fertility window that this app gives and if that seems to work?

I want to hear from you guys before I invest in something called lady comp which is basically a natural family planning device here’s the link in case you guys are curious

https://lady-comp.com/shop/products/lady-comp/