Cycle buddies / Ovulation Buddies AF 01/31 (early ovulation)

I just found out yesterday that I ovulate early so I started using this other app that gives me the option to add the info for opk. Great! Almost missed my fertility window, but was able to get a couple sessions in. Anyone with similar ovulation dates? My periods are usually 31 days in average and I'm happy I discovered I ovulate early and now will make sure I will start the BD works around the end of my period. Lol My TWW begins tomorrow!