This application is to verify with high probability if a woman is pregnant or not.
The method is not based on the presence of gonadotropin in the urine, but on the method of Ogino Knaus that allows estimation of fertility by statistical observation of the menstrual cycle.
Just enter the date of the first day of the cycle, the maximum and minimum of the cycle day of unprotected sex and you'll get the result immediately.

CAUTION:
This app does not in any way replace a pregnancy test by the pharmacy or the doctor, it gives only a probabilistic estimation. It is therefore advisable to get a more precise test.