Tried it. It's not a bad idea but it's barely a start of an app. A picture with 5 text boxes, some of which adjust others when you change them, others not. Some you change it will change another one incorrectly. It barely managed to calculate the resistive divider for the DC output voltage, the LED resistor doesn't change when you change the LED current and it has no frequency compensation at all in it.
Sorry if that seems overly harsh, as I say it's not a bad idea but it's only 1% of the way there, barely started. I'd suggest you read the link in my signature thoroughly, learn about the circuit, practice the calculations on paper and then maybe you might get somewhere.