Macronutrients calculator isn't correct

[BEllis7979]

I bought a Fitbit for two reasons: heart beat monitoring, and easier tracking of calories in-->calories out.

Yesterday (just by way of example) I ate 87g of fat.  That is the combined number of grams of fat that are listed in the various foods I ate.  Macro nutrient calculator says...: 102g.  This isn't a 4 calorie/ 9 calorie problem. This isn't some pie chart problem.  This is your app not being able to complete the simplest of operations.  Even better, the "Nutrition Facts" tab is correct! It says 87.5g. 

Now I'm going to have to question every number that your app spits out.  Did I really burn as many calories as the app says? Or is it using the processor in my phone (more processing power than the astronauts who landed on the moon had) incorrectly? 

I am beyond disappointed. I am dumbfounded at the stupidity of an app that can't handle a basic calculation.

Moderator Edit: Clarified subject

[SilviaFitbit]

@BEllis7979 Welcome to the Fitbit Community. Thank you for the detailed information shared. 

Your feedback is appreciated, we're always striving to improve our services offered. I see where your disappointment is coming from. 

There's a new Fitbit app version rolling out (3.41) keep an eye on your Play Store, as soon as you receive it, you can install it and check the macronutrients calculator. 

Have a nice day.