Why Chromebooks and browser studios fit so well
A Chromebook is a machine designed around one assumption: the browser is the operating system. That assumption is a handicap for most professional software and an advantage for exactly one category. Browser studios are not being tolerated by ChromeOS - they are running on the thing it does best, through its native audio path, with no compatibility layer in between. The consequence is that a three-hundred-euro Chromebook often gives smoother audio in a browser studio than it gives in an Android app on the same hardware.
The hardware you should actually buy
Eight gigabytes of RAM if the budget stretches, because tab count is the real constraint. Beyond that, processor generation matters more than core count for audio work, and screen size matters more than either for anything with a grid in it. What you do not need is a discrete GPU, a large SSD or a high-refresh display - none of those touch audio performance.
What this does not solve
No offline work, no VST plugins, and no low-latency multitrack recording of live players. Those are the same three limits every browser studio has, and they are worked through on the browser-based DAW page. If your Chromebook is your only machine and you need any of the three, the honest answer is that you will eventually need a second computer - not a different website. For the classroom version of this question, see the schools page.