Hello! My proposal is to carry out this development with Ionic 4, a hybrid framework that will work for both IOS and Android or MD. I work using agile methodologies so that we can create a Jira and define short stories but that you can have visual and functional results in the short term. In the event that you require the project to be completed quickly I can work with a partner for the backend so we would do it much faster. For any questions I am available. Regards.