alt Flex is a free Android application designed for users of the alt Flex Wear series smart watches, including Spunk and Spunk Pro. This app focuses on health and fitness, enabling users to effectively track their daily activities such as steps taken, distance covered, calories burned, and heart rate. Additionally, it monitors sleep patterns, providing detailed graphs for daily, weekly, and monthly analysis, which can help users maintain a healthy lifestyle.

The app offers convenient features such as alerts for calls, SMS, and notifications from popular third-party applications like Facebook, WhatsApp, WeChat, Twitter, and Instagram. Users can also control their smartphone cameras directly from the smart watch. Furthermore, the alt Flex series allows for watch face customization, and users can set alarms within the app to wake up gently with vibration alerts.