I had high hopes, and they were mostly exceeded! It's thoroughly documented and has a ton of features! However, there's a few ways it could be improved: 1. The tutorials are an overlay, which is fine... But the app in the background is white with black text, and the light blue-purple just serves to both make the white slightly darker, and the black slightly lighter. Occasionally there's tutorial text on top of application text, and it can be really difficult to read. Making the overlay darker, and the tutorial text white (or a bright color in general) would help tremendously! 2. It's handy that I can turn the tutorial back on if I need a review, but there should also be a feature to end the tutorial early (so I don't run into a menu I already understand having the tutorial again when I don't expect it to). 3. It might be 'out of scope', but this calculator seems oriented around functions - and as such, I don't think it's inappropriate to ask for a function plotting feature! Such a thing can obviously take quite some time, so of course I don't expect it to be implemented immediately... But it's about the only feature that seems obviously missing that I can think of.
OK The tutorial is handy but its pink font overlay makes it hard to read. overall nice implementation
Furthermore, this release contains some minor bugfixes.