No. At this time, the only place where you can watch trips, receive Hopper's predictions, and book flights with us is via our Hopper mobile app. Hopper is not available on desktop or on the web.
The reason we decided to focus solely on a mobile app is because we realized how badly a good, user-friendly flight-booking app was needed. Travelers wanted to book flights on their smartphones but there wasn't a good way to do it. So the Hopper team has been focused pretty exclusively on building, designing, and refining the best booking app out there.