Apple Watch
Your ELO, on your wrist.
Heart rate all day, readiness at a glance, today's list and water in one tap.
Heart rate, all day
Measured through the day by default, so sleep and readiness have real data.
Today's list
Tick things off from your wrist.
Water in a tap
Log a glass without taking out your phone.
Talk to your ELO
Raise your wrist and ask.