Sometimes you see a new stack and are immediately moved to purchase it. This was the case, when I saw  Responsive Grids from One Little Designer.  I already have 1LD's Clean Response installed (both version 1 and 2 — they are slightly different) and the online description for Responsive Grids makes it sound like a revolutionary new stack. 

I'm a little annoyed, however.
The download link took a while to arrive so, while waiting, I browsed 1LD's site to discover that Clean Response is no longer available – Clean Carousel is also missing.
When the download finally arrived, I immediately installed it to find that it is simply an update to Clean Response. It would looks almost as if 1LD's Clean Suite is being phased out?

Responsive Grids creates fully responsive columns and allows you to add rows for extremely quick implementation. Create between one and six responsive columns and up to four rows. Add responsive gutters between the columns and define maximum widths.
Responsive breakpoints give you complete control of how your sections display when viewed on various screen widths and devices.
Responsive Grids will make all text and images within your layout fully responsive.

You must, however, plan your layout carefully. As with Clean Response, adding columns or rows to your stack will delete any content you have already added.