I have not looked very hard but I don't think this app fixes the fundamental issues: which is the removal of proper sub-pixel antialiasing for anything that isn't considered a retina class display by their standard.
This sort of app might get a better output by forcing the 2x rendering and then scaling it to the native display resolution but it cannot possibly be of the same quality as what we had before, unless they rewrote rendering or something like that.
As far as I know there are 2 "real solutions": you buy a display that is retina class in one of their historically supported resolutions or you accept to lose a bit of desktop space by running a "sub-retina" class display at x2.
For example, a 27 inch "4k" (they are 3840x2160) display will get you a desktop space of 1920/1080 in HiDPI mode.
That is sad because a 27-inch iMac from the early 2000 had more desktop space, an image not as sharp but it wasn't bad as long as they kept sub-pixel antialiasing.
As far as I'm concerned, it is that way because they went the lazy way around implementing HiDPI and being able to market it like they were so much better than Microsoft. But that only works if you solely buy their hardware because nobody followed them on the desktop specs (even though it's slowly coming lately it seems).
This issue in my opinion is a testament of how much anti-consumer and disdainful Apple is; because it couldn't possible have cost them a lot of engineering to be able to support both, it is clearly for their bottom line and that's it.
This sort of app might get a better output by forcing the 2x rendering and then scaling it to the native display resolution but it cannot possibly be of the same quality as what we had before, unless they rewrote rendering or something like that.
As far as I know there are 2 "real solutions": you buy a display that is retina class in one of their historically supported resolutions or you accept to lose a bit of desktop space by running a "sub-retina" class display at x2. For example, a 27 inch "4k" (they are 3840x2160) display will get you a desktop space of 1920/1080 in HiDPI mode. That is sad because a 27-inch iMac from the early 2000 had more desktop space, an image not as sharp but it wasn't bad as long as they kept sub-pixel antialiasing.
As far as I'm concerned, it is that way because they went the lazy way around implementing HiDPI and being able to market it like they were so much better than Microsoft. But that only works if you solely buy their hardware because nobody followed them on the desktop specs (even though it's slowly coming lately it seems).
This issue in my opinion is a testament of how much anti-consumer and disdainful Apple is; because it couldn't possible have cost them a lot of engineering to be able to support both, it is clearly for their bottom line and that's it.