The San Francisco H3 App
(Yes, there's an app for that.)
If you like this web site, you should try the SFH3 app. It makes it even easier to look up the next run and find your way to the start on the go. You can even keep track of your runs if you wish to do so. And best of all, it is free!
You can install the Android version from the Google Play store and the iOS version the Apple App store by searching for San Francisco H3 app or by clicking on the buttons below.