I find it very strange that a tool exists to reduce chrome's memory footprint by closing tabs. This does not seem to be the right solution to any problem I can think of.
If memory consumption is what bugs you, maybe you should use a browser that consumes less memory per open tab.
If the number of open tabs is what bugs you, then you are probably using tabs as temporary bookmarks. There should be tools especially for this job. Some sort of "read-it-later" list comes to mind.
"one-tab" looks like some sort of read-it-later list that is labeled as a memory saver. Fascinating.