I'd like to see a Child Tracker.
I'm using the Baby Tracker for my son, who's almost four years old, so the only things that apply to him in the baby tracker are his measurements of height, weight, head size, and immunizations.
A Child Tracker could include a chart with more age appropriate symptoms of children in toddlerhood/childhood, such as allergies, behavioral issues, nutrition, illnesses, etc.
Treatments could include vaccinations (already in the Baby Tracker) along with medication treatments, behavioral counseling, dietary supplements, physical therapy, etc. for example.
Events could include developmental milestones such as losing teeth, six and twelve year molar growth, growth spurts/growing pains, development of fine motor skills/hand-eye coordination and balance (for toddlers), learning to read/write, etc.
Perhaps you could also add an Activities category for things like soccer, t-ball/little league, music lessons, art lessons, gymnastics, horseback riding lessons, martial arts, etc.
The birthday tracker could still be used as well. Maybe the icon for the tracker could be a handprint, for example, like the icon for the Baby Tracker is a bottle.
Thanks for considering!