Different apps tell me I ovulated on different days!

Sophie

Hi all,

I’m hoping someone can help me work out when I ovulated. I use a wearable sensor (Ovusense) and I use three different apps to track my BBT. Each app has given me a

different ovulation date. Can anyone help me to work out which one is right? I’m planning to test on Wednesday as I usually have 38 day cycles and that will be CD38. Thanks in advance!