Build me a Mobile App

I want to have an app for the Bengali speaking people who want to improve their communication skills in English. Find the attached file and ppt on Canva. click on the link https://www.canva.com/design/DAFaPBO57eE/j2wBnI4IDoWSO_9q-1oY9Q/view?utm_content=DAFaPBO57eE&utm_campaign=designshare&utm_medium=link&utm_source=publishsharelink