Do you recommend buying the "HP Prime Graphing Calculator App"?

[KF6GPE]

I did the opposite. I bought the app first, learned to use the calculator, and then that convinced me to buy the calculator.

I admit that neither have gotten nearly as much use in my collection as Free42 and my DM42, but I suspect that's because I forget to put the Prime into RPN mode.

Regardless, if you're not carrying the Prime and use the Prime's features, yeah, it's definitely worth the price. I could see the app being valuable for a student on the go at university, for example.