Development cost would typically be a function of the resort booking app's complexity, features required, and choice of platform being iOS, Android, or both. All critical functionalities including user registration, applying filters in search, booking management, and payment integration will impact the overall development cost. Other advanced features like real-time updates for availability, review, and loyalty programs can increase the cost involved in developing the app. The third consideration, therefore, is the consistency of periodic budget update maintenance. As this resort booking app development continues uninterruptedly and becomes smooth, the trusted company-one is USM Systems-will always help ensure an excellent user experience and satisfaction is garnered.