Home screen completely renewed -- New "Body Rhythm" and "Battery Level" sections added, significantly improving visibility of activity and sleep data. "Heat Stress Notification" newly added -- Combines biometric data such as skin temperature, heart rate, and HRV with the Ministry of the Environment's WBGT (Wet Bulb Globe Temperature) to notify users of individual heat burden signs in 4 levels. Equipped with new features such as "Calorie AI" to support daily health habits. Apposter Japan Inc. (Headquarters: Chiyoda-ku, Tokyo, Representative Director: Kim Gon) will implement a major update "App 3.0" to completely renew the dedicated application for its smart healthcare brand "b.ring" in July 2026. This update features a completely new UI/UX for the home screen and the addition of "Heat Stress Notification," specialized for countermeasures against Japan's intense heat. This is a personalized heat countermeasure function that combines biometric and environmental data. Home screen completely renewed App 3.0 features a completely new home screen configuration. It has been redesigned with a focus on "Today's Condition," which users check most frequently. The new home screen includes a "Body Rhythm" section based on circadian rhythm. It integrates and analyzes heart rate, HRV, sleep patterns, and activity levels over the past 14 days to suggest optimal times for concentration, rest, and exercise. Additionally, the real-time display of battery level, a highly requested feature, is now permanently available on the home screen. Accessibility to activity logs and sleep data has also been significantly improved, allowing users to access necessary information with a single tap. "Heat Stress Notification" -- New preparedness for the intense heat season One of the flagship features of App 3.0 is the addition of the new "Heat Stress Notification" function. In Japan, over 90,000 people are transported by ambulance due to heatstroke each summer, and the number of deaths reached a reco