I don't know if this project is still being worked on, but I have to say, I love this program. It is absolutely amazing. There are just 1 or 2 things I've noticed that could be worked upon that may also just be due to the hardware (as I am on Quest 2)
1. the Tunnel Rings are BARELY off-center. it's not super noticeable but on my most recent spiral use, I noticed it was probably 1-2 cm (idk like 10 pixels) off-center to the right. not devastating but something I noticed
2. the primary issue I've been having is that I am unable to save presets. Again, this may b due to me using a Quest 2, however, I have tried everything I can and the preset buttons do not work. So, if you want to save your settings for a specific spiral set, write it down so you can do it easily. The main issue with the presets not working is that if you want to save all the text you use for your spiral. You need to manually type in every word each time you want to have text with your spiral.
Other than these two small things, I think this is an amazing program, and if the creator is still working on it, excellent work, I look forward to the next update/full version!