Flutter Halal Stock Screener

I need a production-ready Android app that lets Muslim investors search Indian stocks, see an immediate Halal / Haram verdict backed by transparent Shariah-screening logic, and dig into key financial ratios before subscribing for deeper data.

Core flow
• Users sign in with Firebase Auth, land on a clean Flutter UI, type any NSE/BSE ticker, and get real-time financials pulled from your chosen market data API.
• Your code then runs my Halal screening rules, surfaces the pass/fail result, and shows the individual ratios that drove it (debt, income purity, liquidity, etc.).
• A tabbed screener (weekly, monthly, quarterly, half-yearly) lets them filter and sort all listed stocks.
• Each stock page embeds our educational YouTube playlist to explain the metrics in context.
• Google Play Billing unlocks premium screens; free users see a limited set.

Tech stack & services
Flutter (front-end), Firebase (Auth, Firestore, Cloud Functions, push), Google Play Billing Library, and any reliable market-data REST API. The entire build must be stable, well-structured (Bloc/Provider/MVVM—your call), and delivered to the Play Console internal test track within a month.

Deliverables
1. Complete Flutter source in a private repo
2. Firebase project hand-over with rules and indexes
3. API integration keys stored with proper .env handling
4. Signed AAB ready for Play Store release
5. One-page setup & deployment guide

Timeline: one month from kickoff.

When you bid, drop:
• Play Store links to apps you’ve shipped with Firebase + in-app purchases
• A line on which market data APIs you’ve worked with and how you handled throttling/caching
• Your estimated calendar schedule and cost split by milestone

Only reach out if you have proven Flutter, Firebase, and subscription billing experience—this project needs to move fast and ship smooth.