The interface is great for what it does though. I still use ti-83 interface with the calculator app on my phone.

Yeah I guess I should correct and say that I do use an HP 50G emulator on my iPhone cuz I like RPN.

But even still, the iPhone can do many things and is many times more capable, and you can buy a used iPhone 12 that works fine for about the same price as one of these calculators.