Na serveru Slunečnice.cz je zajímavá iOS aplikace:

Heaviness - Weight control 1.1

The Heaviness app is used to monitor your weight loss project. If possible, always weigh yourself at the same time of day (preferably in the morning), on an empty stomach and unclothed, in order to achieve comparable results. Some scales also measure other aspects of body composition, eg muscle…

Adresa: https://www.slunecnice.cz/sw/heaviness-weight-control/