ETA,from Eastwood, is a very useful app for getting around. Specifically when it comes to planning routes and estimating how long it's going to take you to get to your destination. And now you can use it on the Apple Watch.
The new 2.0 update includes various tweaks like iPhone 6 and 6 Plus optimization, more language options, and will now work with more navigation apps like CityMapper and Navigon. Then, of course, there's the Apple Watch functionality. Much like the iPhone app, you'll be able to select a destination from your list of favorites and receive a detailed explanation of how long it should take you to get there - as well as a basic idea of how bad the traffic is. You can also access Maps if you need to.
ETA 2.0 is available now, and if you don't have the app already you can download it for $1.99.