See https://wiki.logos.com/Night_Mode for ways to invert the colors on your PC/Mac, including Logos 6.
Logos 5 supports touch gestures for scrolling and turning pages (on Windows).Joshua Coady commented
Started with v4, now on v8 and I use logos almost exclusively on my surface pro. The handwriting panel used to be able to be used to write in a variety of text fields, but it no longer works for notes and some other places (and hasnt worked for a year or 2). I was really hoping that v8 would fix this, but just upgraded and it still doesnt work. I also have some difficulty doing things like resizing windows (like the library list) because the touch target is so small you have to be very precise about where you hit it. Same deal with scrolling. Also, the extra symbols on the keyboard dont work (anything that isnt on a regular keyboard).