Developer of the app here, happy to answer any questions.
replies(26):
I immediately hate that when intending to scroll vertically using the trackpad on my macbook, it constantly unintentionally scrolls horizontally as well and I have to correct it. It is particularly irritating since there is no content on the canvas to see when scrolling.
Maybe I'm just super accustomed to browser scrolling behaviors, which snap scrolling based on initial direction.
I'm mostly posting this because its the kind of papercut that might be forgotten over time.
Once I started using it for actual diagrams, the issue completely faded away. Scrolling a super long vertical-only document is an unimportant edge case.
This is the god damn holy grail of ascii chart editing.
Well done.