Develop a Mobile and Web based application for Finance & Education Services

An interface for School/educational institution, Parent, Student, Teacher, Staff, Finance Companies to manage the Fees and monthly Performance tracking of the students. The first module will be focused on managing the managing and financing the fee and tracking the performance of student. If you have worked on similar projects or a ready application which can be customized, then share the details. The application will also have value added services for School/educational institution, Parent, Student, Teacher, Staffs and their referrals (Non-Transactional Users). The Application will also have a community platform for all transactional and non-transactional users. The transactional users will be able to see the interface of their own transactions while Non-transactions users can use only the community platform.
What technology will you use for Web and Mobile Application, Multilingual , AI driven support Audio/Chat? What will be the duration for final launch?