OnWear is a free Android application developed by Yishu Zhang, designed to work with all kinds of sports watches. It offers a comprehensive range of features that synchronize data such as steps, heart rate, exercise, and sleep tables. Furthermore, when you grant phone and SMS permission, you can push your SMS and number to the connected watch device. The app also allows you to push messages from different applications to your watch and set various reminders.

OnWear supports the LW15 watch and offers more application scenarios and features awaiting to be explored. The app is an excellent addition to any fitness enthusiast's toolkit as it helps you keep track of your progress and achieve your goals. Overall, OnWear is a must-try app for anyone looking for a comprehensive health and fitness app for their sports watch.