Family Weight Tracker is an iPhone application designed to help families manage their health together. With the ability to register multiple users, this app allows you to track weight management for everyone in the family, from parents to children and even babies.

One of the standout features of Family Weight Tracker is its ability to cater to different age groups. You can select specific measurement indexes based on generation, such as the "Kaup index" for infants aged 3 to 5, the "Rohrer index" for elementary and junior high school students, and the standard "BMI" for adults. This makes it easy to check standard weight and obesity levels for each family member.

The app allows you to record weight measurements in the morning and at night, although measuring once a day is also sufficient. Additionally, by inputting the height of both parents, you can even get an approximate estimation of a child's future height.

Family Weight Tracker doesn't require any complicated registration process and can be used right after installation. Its simple operation makes it enjoyable to use on a daily basis.

Key features of Family Weight Tracker include:

• Multiple user management
• Graphical display of weight, body fat, and height changes
• Target weight setting
• Archive function for past records
• Child height estimation
• Password lock function
• Weight list display based on measurement index (Kaup index / Rohrer index / BMI)