I downloaded Vivaldi for iOS a few months ago, used it for a bit, but then missed the bottom tab bar too much and switched back to a different browser that blocks ads made by crypto-bros.
I switched back to Vivaldi because I thought, who cares about a bottom tab bar when everything else about the browser works so well?
For example, do you know how few browsers that fully support handoff between MacOS and iOS? There's Safari, the one that refuses to hide ads and tracks everything you do, and Vivaldi, and might be another, but I don't think so. Vivaldi for the win on that one.
Then along comes the 6.5 update for iOS and what do we get? A bottom tab bar. Oh, and they fixed where you couldn't select the second app icon, but didn't bother mentioning it, but still that's a pretty nice little bug fix squeezed in.
Seriously, the best browser out there, for iOS, MacOS, and Windows.