Is it worth back logging on a diff app

Hey there I decided to download fertility friend I see people saying that the chart is better....so far I'm confused but I'm sure I'll get it....I'm wondering should I take the time to log all my info (it's mostly just bbt and a few pos opks from cycles) from glow over to it? Will that give me the cross hairs? Is it a waste of time to have both apps? Jw what u all think :D