In 2016 I made a small web app to help me calculate the ideal values for reverbs and delay, as I constantly found myself doing the math (which I never could remember anyway) by hand, just to be sure that the decay on the snare drum wasn’t messing things up, or to make sure the pre-delay wouldn’t become a post-delay at some point.
I just gotta say it hasn’t aged very well (but in the greater perspective – who has?). Although a bit sloppy looking, it still works, and that was the point anyway. I had actually forgotten all about it until recently.
The reason why I didn’t make a Swift version for iOS/iPad initially, was simply that it would require that I had my smart phone or iPad with me to every studio session, which would be pointless and counter-productive for me, so I figured that I probably could throw something together with javascript and old school HTML. And so I did.