Ok, good luck. One thing I'm missing in both sites is lack of some search box, where I could type feature and I would show me which apps have it and which don't.

That's on the list of things to add for sure.

It's one thing to make your own comprehensive solution, but taking it directly from uxtools.co seems shady.

All data is independently researched. In some cases you will inevitably have overlaps, because it makes the most sense to order content in a certain way.

The datasets are also fundamentally different, because I have drawn my own conclusions during my research.