Noted! Do you think the app would work well as is on the iPad if we added free drawing with the pencil in the notebook? We’ve designed the entire interface with a laptop in mind. Very curious how iPad users feel about everything.

I don't have an iPad but I do a lot of free-drawing PDF annotation on Android with Squid. For maths it's way easier than typing Latex. Personally I wouldn't consider this kind of app unless it had free drawing as a primary tool. Even if you're focused on laptops, many laptops have pen input, especially those used by students. Many of my students use OneNote to annotate lecture slides with a pen; even though OneNote is pretty limited, there aren't many good competitors on Windows.

Very interesting! Definitely sounds like a gap even in the laptop space then. Thanks for the input!

> Do you think the app would work well as is on the iPad if we added free drawing with the pencil in the notebook?

I'm not a frontend mobile developer, so definitely not entirely qualified to comment, but it doesn't open in Safari (MacOS or iPadOS). That said, I did try uploading Watson and Crick's paper on DNA and it seems to upload but won't open (hangs on 0%) in both MacOS Firefox and MacOS Chrome (both downloaded fresh today). I also tried opening the MacOS app on a computer with MDM controls and it was blocked (need a valid signature on your dmg).

Ginger Labs (publisher of Notability) has dozens of employees and has been in operation for 14 years, so it's a bit unfair to compare, but I definitely like the idea of have a Google Docs style wide margin to play in. Something like MathPad for LaTeX would be nice as well. Lots of asks, I know.