Ben MacNeill is the founder of Trixie Tracker, a service that helps parents track data about their babies' development. Over the years, MacNeill tracked extensive data on his daughter Trixie, including that she used 500 diapers in her first 44 days and drank around 30 ounces of milk per day. The data showed patterns in Trixie's sleep, such as average nap length of 38 minutes. MacNeill has since expanded Trixie Tracker to allow parents to track not just sleep but also breastfeeding, food intake, medicine doses and compare data. He hopes the service can provide insights to support data-driven parenting.