Co-founder @Student Blueprint, Engineer @Microsoft Excel, CS Teacher @TEALS, Computer Science @Yale
The answer depends entirely on the details of your application. The more features and pages you have, the more time it will take. The higher the quality you're looking for, the more time it will take. It really takes an experienced developer going over the to determine how long it will take. If you're still looking for help, I'd be happy to go over the details if you want to schedule a call.