I can provide a Developpement of a mobile application using flutter for the front-end and Laravel for the Backend or node js ( the Design of the application can also be created if none is provided ) the service also includes a IOs application if wanted and a clean backend that can be used in the creation of a website . As for the database SQL or NoSQL databases can be used including Firebase , the Application also contain animations and the Use of well-known Design Patterns ( Solid Design background) .