Heartly is a health and fitness application designed for iPhone users, focusing on heart health monitoring. This free app allows users to measure and track their heart rate and blood pressure with ease. By simply covering the rear camera lens with a fingertip, users can receive instant heart rate readings. The app emphasizes the importance of conducting multiple measurements throughout the day to ensure accuracy, particularly in the morning, before sleep, and after exercise.

The app employs advanced algorithms to analyze images captured by the phone's camera, ensuring precise heart rate measurements that have been validated through comprehensive professional testing. Additionally, Heartly features a blood pressure and blood sugar tracker, providing users with insights into their health trends. The application also allows users to share their heart rate data with friends and family, making it a versatile tool for health management. Subscriptions are available for enhanced features, but the app can be used without an internet connection.