I need an experienced developer who can take my subscription-based idea and turn it into a polished AI application that runs seamlessly in a browser as well as on iOS and Android devices. The core of the product is an AI engine that ingests raw data and turns it into clear, actionable reports—charts, summaries, and alerts that update in real time. From the user’s side, the experience should feel effortless: sign up, choose a plan, connect data sources, and immediately start seeing insights inside a clean dashboard. On the business side, I’ll rely on you to wire up secure payment handling, tiered access, and an admin panel so I can manage users, plans, and usage metrics without touching code. To keep the hand-off smooth, here’s what I expect as concrete deliverables: • Responsive web app (React, Next.js, or similar) • Companion mobile app for iOS and Android (React Native, Flutter, or native if you prefer) • Back-end with scalable AI processing and REST/GraphQL APIs • Subscription and payment integration (Stripe or equivalent) • Deployment scripts and documentation so I can launch and maintain the stack If you have a portfolio that shows AI-driven dashboards or SaaS subscriptions, I’d love to see it along with a short outline of how you would approach data ingestion, model training, and cross-platform UI. Component Description Tools / Frameworks * Frontend (Web + App) User interface for quiz, chat, dashboards React.js / Next.js, React Native * Backend API Layer Handles user data, subscriptions, AI interactions Node.js / Python (FastAPI) * AI Core Layer Multi-agent coaching system using large language models OpenAI GPT-5 / Anthropic Claude 3.5 * Database User profiles, chat history, quiz results, KPIs PostgreSQL / MongoDB * Auth & Payments Secure user registration, login, and billing Auth0 + Stripe / Chargebee * Email Automation Sends personalized follow-ups and action steps SendGrid / Mailgun * Hosting & Infrastructure Cloud scaling and data management AWS / Azure / Vercel