First, let's introduce the basic apps and functions of Apple Watch.
Basic apps: camera, photo, heart rate, fitness record, period tracking, breathing, music, phone, clock kit, etc.
1-Camera: It is a good choice for those who like to shoot video, you can see the camera viewfinder on the watch.
2-Photo: You can store the photo materials you need, which is very useful for students.
3- Clock Kit: Timer, Countdown, Clock, Alarm and more. Use with Siri, there will be an unexpected sense of shortcut
4-Telephone, Information: Useful for those who like to go out without a mobile phone, and may have a greater impact on cellular users.
5- Compass: As the name suggests, the compass. Nothing to add.
6-Noise: For environmental noise, evaluate your day or week's noise pollution to better protect the user's hearing. But this function consumes power
7- Heart rate: Generation 4/5 adopts the second generation heart rate sensor, which is more accurate. Also supports ECG
8-Fitness record: You can view the daily calorie consumption/standing time/exercise time, as well as data such as floors, walking distance, etc., the measurement is more accurate than that of mobile phones.
9-Physical training: For those who love sports, it is definitely a good choice. There are many types, and the professionalism and integration are also high.
10-Music: Many people think that he is useless for two reasons, one is that the mobile phone is always around, and there is no need to use the watch.
11-AppStore: watchOS6 supports the watch to use the AppStore independently, and version 6.3 supports the built-in deduction of the app, which is more friendly to cellular users and students who cannot wear watches to school.
12-Map: Navigate with map software on the mobile phone, the route will be displayed on the watch, and there will be vibration reminders for turning at intersections.
13-Period Tracking: If you are a girl, then this must be worthy app. If it is a boy with a girlfriend, you can also use this to grasp the change of the girlfriend's mood. 
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