There's an app for that. It's a phrase that goes all the way back to the launch of the iPhone 3G back in 2009. However, it's never been more accurate: there's an iPhone app for almost any use case you can think of. It's also true of the Apple Watch.
Best Apple Watch apps: 38 apps, games, and services to try
The best Apple Watch apps we've used hold their own on the smaller screen and deliver all the information you need.