Why are my bbt charts so different?

Question

I use Glow and FF but looking at my bbt charts, the cover line is different. 
Which should I go off of? Same info is input to each app... 🤷🏻‍♀️

Answer

On CD13 Glow has 97.45 on the chart and FF has 98. Are you sure it’s logged the same?

Answer

I don't use FF but I've heard it is the more accurate of the two. This is my first month charting so I don't think I'll switch at all, this is accurate enough for me for now. Also to my knowledge, FF you have to log into the website. Which you could do on your phone, but Idk if that changes anything for you as far as ease of use. Good luck!

Why are my bbt charts so different?

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