Summary
The Clock app can be useful for setting alarms to wake up or go to bed, or to alert you of an upcoming appointment or meeting. You can also use the Clock app to turn your iPhone into a stopwatch or a timer.
The Weather app can be handy to give you forecasts for the next few days in your own city or a city you're planning to visit soon. Besides viewing a forecast, you can also view the current weather conditions in different parts of the world.
The Stocks app can help you keep track of your stock portfolio so that you can see how much money you've made or lost.
Since tracking money can be handy, you might also want to learn how to make contactless payments through Apple Pay, which is the topic of the next chapter.