You could also carry your rolodex, watch, calculator, etc in your pocket - but those things have been pretty much moved to your phone and the net as well.
Im assuming you mean the layout for the Semesters/Sections/Notecards? if so they are meant to be 3 vertical rows so it looks a bit better when you have some content filled in. Obviously thats not ideal but I'm still working on my design skills. the pagination numbers also seem to be a bit off center which I'm still working on.
It is geared towards academia with creating semesters and sections first, but I agree that I should allow you to jump right into creating notecards.
I made something like this for my girlfriend. She uses it for school. It's not very polished, but it may work for your needs or give you some ideas.
notecard.herokuapp.com
You can create an account (no email verification necessary). Your first step is to create a semester, then a section, then you create notecards. The notecards flip front to back with a single click. You can also put your notecards in a "Known" or "Unknown" pile so you know what you have to study.
You could also carry your rolodex, watch, calculator, etc in your pocket - but those things have been pretty much moved to your phone and the net as well.