I used this last year when I was working on a new site for something, I ended up paying for a month, then cancelling. I used it pretty much everyday, so I think

I used this last year when I was working on a new site for something, I ended up paying for a month, then cancelling. I used it pretty much everyday, so I think, the £9 was well worth it. There are obviously still browser quirks that needed ironing out, but this got me a good way there in multiple screen sizes at the same time - seeing how a little change looks instantly across different screens was super helpful. Edit: The dev was super responsive as well, I emailed about a bug that I found, and he emailed back a version to test with the fix in, with the full version being rolled out later in the week.