Hello @SunsetRunner, good to see you in this opportunity in our Fitbit Community. Indeed, the Fitbit app will show a brief summary of your macronutrients, but does not have the option to display this information in different units beside the percentage.
In the web-Dashboard since this option was implemented before it were added to the app, it allows you to have more details in depth of all your data, since this is the main difference between the app and the online Dashboard.
If this is something in which you're interested, I wonder if you have reviewed the following Feature Suggestion: macros in grams instead of only percentages in the app. If you haven't feel free to contribute with your vote and comments. This is a great way to let our developers know what you'd like to see in future updates!
See you later and hope this information helps.
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