Sure, you could use the web based app with Google Jamboard, but if you have access to an Android device you have access to a few more features if you switch. And you may have access to the Android app if you have a Chromebook from the last few years.
Google Jamboard is not quite the replacement for Explain Everything or SMARTNotebook, but it is a contender. Jamboard allows better collaboration between you and your students, and is especially beneficial for schools with touchscreen Chromebooks. I mention how to create graphic organizers in Google Slides, here’s my video on how to do it.