All tools

7 tools and counting. Every one is free to try — register to save your work.

Body Mass Index with a healthy-range chart and clear guidance.

Your resting metabolism (Mifflin-St Jeor) + maintenance calories.

Daily calories to maintain, lose or gain weight — with goal targets.

How much water to drink daily — from weight, activity & climate.

Estimate body-fat % with the US Navy tape method — no scale needed.

Ovulation day, fertile window & your next periods.

The best time to sleep or wake — timed to 90-min cycles.