Does this app actually work?! My

Fiancé and I have been trying to conceive for what feels like the LONGEST time. I was on the Depo for not even a year ( 3 injections ) and when I got off of it, it took me 3 months to get my period. Now it’s been almost 8 months and I haven’t been able to conceive! We have sex.. ALOT and I thought maybe that’s the problem considering the sperm count, so we’ve slowed it down a bit but still have no luck. Help!