YOUR SITE IS NOT WORKING
So basically you want the app that allow to user to select the plan step by step, once the user select option then next and then slect something then next, at the end it give the client total price and the list of feature that he/she add, or have a option if he/she want to remove at the end,
Correct me if I am wrong.
Are you open to React-native development? I recommended you build in a hybrid app because it will work on both IOS and android. Yes, I can provide you the app.
Feel free to initiate the chat I am available to discuss the project in detail.
I'll be waiting for your response to have effective communication to set the grounds.
Best,
Adnan H.