Let us select dates to add to our food and activity logs.

As far as I can tell, right now you can only add food or activities to your logs for the current date, so that means if you add stuff after midnight then you're stuck adding it for the day you're adding it and not the day that it happened.  Or maybe you're a night person and would like to keep stuff you eat after midnight in the log for the day before.  Travel, too.  This is really the one huge thing that keeps me from continuing my use of the logs here.

When you hit "add to food log" and it gives you the page to enter in the quantity, you can select the date that you are adding it to.

The top thing to enter is the date, above the meal selection.  I've gone back and entered previous days loads of times when I get back from vacation.

Wow, I can't believe I missed that and it's been staring me in the face 20 times already.  Thanks you two!