Eduardo, I’m not eager to explain how options work. First it will be waste of time to learn options just for that app. Second, it is close to impossible to do it briefly. In general: you manipulate (top right set of sliders) shape of the implied volatility skew (top graph) and observe impact of changes on structure graph (bottom graph). With bottom right sliders you can manipulate some parameters of the structure. Middle right are display of the greeks (model driven indicators to monitor what is going on with the trade).
… you asked for it
Your suggestions make sense. I did consider some of them as well.
Input instead of of dropdown for spot price - generally good idea but a) I’d have to write verification code b) idea of the app is to provide general overview without much details. I use very simple options model in this app. For example I limit it to american style options only, and skip over dividends etc. Increasing accuracy of atm wont change anything and can only defocus a user.
Pop-ups are under dev. I’m working on them now. I may do what you suggest but I’m afraid that app already has too many buttons/sliders/dropdowns. I remember about closing buttons. Thanks for feedback.