Hello,
I love the ruler which comes with the latest update.
I use the checkered sheet template in Din A4. Normally one box is 0.5cm long. The template from Goodnotes is a bit bigger. That's good, because I'm a teacher and so the students see a little better via the beamer, because just everything is a little bigger what I write. However, the ruler doesn't fit with it, of course. The students are used to 2 boxes being 1cm. But you offer your ruler only in cm and inch. Would it be possible to also add an option that fits your template? So that for 2 boxes of your template exactly 1 is displayed.
I have tried squared paper with 0.5cm, but that is just too small for the beamer.