Below is a brief guide to using the application, with example foods.
Start from the Search screen.
You've now added an Apple to your Menu.
Go to the menu screen. You will see a list of food items that you've eaten, what time, and how much.
Press the "Nutrients" button
You will see all the nutrients that you've eaten. You can sort them by amount or by the percentage of Dietary Reference Intake (DRI). The DRI column is empty, because we haven't specified our target DRI values yet. You can explore the DRI later.
Let's add more items to the menu.
Search for another food, and add it to the menu. For example "bananas, raw". Choose anything you like. Explore the foods in the database.
Keep eating and drinking things and adding them to the menu.
I asked you to create an apple foodmark above (or any other foodmarks). If you've done this, go to the Foodmarks page. You will find the Apples there, so you can eat one without having to search for it in the database. You can foodmark any food you like.
Since you probably drink water several times a day, you can create a "Water" recipee that contains a glass of water. This way you can drink several glasses of water throughout the day, without measuring the glass every time.
My current water recipee has 270g of tap water. Here's how to create it:
You now have a Water recipee that you can use to easily add ("Eat") glasses of water to the Menu throughout the day. Try it:
There are three screens to choose foods from.
I use this tool to keep track of what I eat and drink in one day, including water.
I then check the list of nutrients that I've consumed during the day, comparing them with the DRI values that I have set, and I decide what to eat more of and when to stop eating.
I mostly track two nutrients: Energy and Water.
I drink more water, if I'm behind on my target DRI value for water.
I stop eating when I've reached my Energy DRI. Well, not always, but at least I make an informed decision.
I don't do this every day, and I don't try to calculate everything when I eat out. I usually do it at home, where I have a kitchen scale.