I’m sure this is really obvious but I’m new to charting and am confused.

I started charting with Premom (for ovulation tests and bbt) then someone suggested using fertility friend, so I’ve been putting temps on that too.

I’ve now managed to get really confused as I thought I ovulated on 14th, but it looks like fertility friend thinks it was 12th.

Any thoughts on which date is correct please?

Also, is it better to just use one app for charting to avoid confusion or do you use multiple apps?

Thanks in advance 😊