TyranoBuilder is some pretty neat tech. You can watch me create the world's worst (best?) VN here:
https://www.youtube.com/watch?v=l9vRwLB_eEk
I apologize that it is offcenter. It wasn't offcenter in the preview pane while recording and there was no way I could record again as I had a lot of laughs making the original. Just felt like it would have way different mojo.
Quick Impressions of TyranoBuilder: I'd say if you were honestly interested in making a VN, TyranoBuilder would be a huge help in making that happen. Literally the entire engine takes all of ten minutes to become familiar with the basics and thirty minutes before feeling comfortable with the software itself. There are a few quirks with how things enter/exit the view-field but what's nice is that you can make very quick changes and
literally right-click on a thread previous to your changes to quickly ascertain what is going on / fixes you made actually worked.
Also the syntax necessary to get 80% of what you need done is dirt-simple to do. There are a few things you can do to work outside of what TyranoBuilder allows but those are some advanced techniques.
One quirk that took a little bit for me to figure out was that you need to save your game prior to compiling. I didn't think it would be necessary as I thought saving was more for archival purposes. The first time I compiled to a Windows Build the game was all messed up, but when I ran the preview everything would work fine. So just be mindful of that.
Also I wish that compiling to Android was easier. Right now it exports to files that you can then import to Eclipse with ADT. At the very least I'd rather having something to build form Android Studio. Even better than that would be to build an APK directly or setting up the environment from within TyranoBuilder from which you could have a few flags to set things properly to distribute on the Play store easily.
TyranoBuilder essentially makes it that the part you are going to be spending most of your time on will be asset creation and story creation. If you had a passing fancy at creating a VN, I don't think you'll find any software that makes it any easier to just get to the creative part of it.
Edit: Also if anyone cares, the worst VN featuring dinosaurs can be made available if anyone wants it. Just let me know and I'll upload the Windows build somewhere.