Feelfit is an iPhone application designed by Shenzhen QingNiu Software Co. Ltd, available for free in the Lifestyle category with a focus on Health & Fitness. This app allows users to connect a weight scale to record and monitor family weight data. It offers chart displays and reports for easy tracking and sharing among family members.

Feelfit integrates with HealthKit on iOS8, enabling seamless synchronization of weight measurement data. It emphasizes that all recorded data is for reference purposes only to aid in weight control and long-term fitness monitoring, not for medical diagnosis or treatment decisions. Users are advised to consult healthcare professionals for medical concerns.