Desktop & Mobile Personal Assistant

I have a simple proof-of-concept running at https://personal-assistance-laptop-assistant-938098220572.asia-southeast1.run.app/ and now want to turn it into a polished personal-assistance web application that feels equally natural on a laptop or a phone... (Budget: ₹600 - ₹1500 INR, Jobs: Backend Development, Frontend Development, iPhone, JavaScript, Node.js, Python, Vue.js, Windows Desktop)