Built for one stubborn, wonderful 74-year-old.
Our first user was a father juggling new prescriptions, changing dosages, and a doctor who kept asking, "So how have the new pills been treating you?" — a question he answered from memory he didn't trust. Spreadsheets were never going to happen. So we built him a diary with buttons the size of his thumb, and his answers stopped being guesses.
Chickadee is what we learned, made for everyone's parents.