My use case is high school students, if you have any thoughts on that.
We actually designed it with high school students in mind. We interviewed a lot of them, and we reached the conclusion that on average they were using less than 10% of the features of their calculator.
So we designed ours trying to make it as intuitive as possible. You'll notice it borrows from gaming consoles and mobile phones: that's because high schoolers already know how to use those!
As an example that might seem like a minor detail, we're the only graphing calculator on the market with anti-aliasing. It might not sound like much, but it's a lot of work to get right and that's the kind of detail we like to pay attention to.
Anyway, you can judge by yourself: our (free) simulator is just a click away: https://www.numworks.com/simulator