On Nutrition you see what you still have room for today: the ring shows what you have left, not what you’ve eaten.
Adding food. Tap Add next to the right meal. You can search, scan a barcode or take a photo.
Water. From the home screen you add water with one button. If you want to track it as a habit, you turn that on there too -- your water goal then counts towards your streak.
Your goals. Your coach sets them. If you don’t have a coach, the ring fills up as soon as you set them yourself.