BargainMeld - Save More on Everything You Buy | Flutter + NestJS

BargainMeld - Save More on Everything You Buy | Flutter + NestJS

A complete, production-ready AI-powered deal finder and personal shopping assistant built with Flutter, NestJS, and Laravel. Tracks prices across retailers, delivers AI recommendations, and helps users save money — with real-time alerts, gamification, and subscription monetization. iOS, Android, and Web.

🚀 Key Features

📦 Price Tracking & Alerts

• Track products across multiple retailers simultaneously

• Visual price history charts per product

• Custom price alert thresholds — get notified when price drops

• Real-time price drop notifications via WebSocket + FCM

• Manage and delete alerts from a single screen

🏷️ Deals & Coupons

• Browse deals with advanced filters — category, retailer, min discount, expiring soon

• AI-curated daily deals personalized to each user

• Save / unsave deals for later

• Browse and filter active coupons by category or retailer

🤖 AI Personal Shopper

• Multi-turn conversational AI powered by OpenRouter (GPT-4o-mini)

• Context-aware — knows tracked products, wishlists, and savings history

• Product and deal recommendations from the catalog

• Budget optimization tips and conversation history management

🛒 Shopping Tools

• Wishlists — create multiple lists, view current prices and total value

• Shopping Lists — create lists with quantities, mark items purchased, view best prices

• Product Comparison — side-by-side comparison across retailers

• Trending Products — biggest price drops and most tracked items

📊 Analytics & Savings

• Total savings overview with monthly breakdown

• Category-based spending analysis and savings trends

• Best deals found history

🏆 Gamification

• XP points system with levels and progression

• Achievement unlocking and badges · Streak tracking

• Global leaderboard (top 20 users)

⚙️ More Features

• Real-Time Updates — WebSocket price drops, deal alerts, savings updates

• Push Notifications — FCM + local notifications, topic subscriptions, per-type preferences

• 8 Languages — EN, DE, ES, FR, IT, JA, PT + runtime switching

• Dark & Light Theme · Currency & location settings

• Auth — Email/OTP, Google Sign-In, Apple Sign-In · JWT auto-refresh

• Admin Panel — Laravel Filament for users, subscriptions, feedback

• 31 Screens — fully designed and functional mobile UI

🛠️ Tech Stack

📱 Mobile (Flutter)

• Flutter / Dart 3.2+ — iOS, Android & Web (single codebase, 15+ feature modules)

• State management: Riverpod · Navigation: GoRouter · HTTP: Dio

• Real-time: Socket.IO · Payments: in_app_purchase (StoreKit + Google Play)

• Auth: Google Sign-In, Apple Sign-In · Notifications: Firebase FCM

• i18n: 8 language ARB files

⚙️ Backend (NestJS — Primary)

• NestJS 11 (TypeScript) — 60+ REST endpoints + WebSocket gateway

• Database: PostgreSQL (31 tables, migrations + seed data) · Cache: Redis · Queue: BullMQ

• AI: OpenRouter (GPT-4o-mini) · Storage: AWS S3 · Email: AWS SES

• Swagger/OpenAPI docs at /docs

🛠️ Alternative Backend (Laravel)

• Laravel 11 + Filament admin panel · 17 Eloquent models

• Full admin dashboard — users, subscriptions, feedback management

💳 Subscription Plans

• Free — 5 tracked products, 1 wishlist, 3 AI chats/day

• Premium Monthly — $4.99/mo — Unlimited everything

• Premium Yearly — $29.99/yr — Same as monthly, best value

• 7-day free trial · Apple StoreKit + Google Play Billing + receipt verification

📦 What's Included

• 📱 Full Flutter source code — iOS, Android & Web (31 screens, 8 languages)

• ⚙️ NestJS backend — 60+ endpoints, 31-table schema, migrations + seed data

• 🛠️ Laravel + Filament admin panel (alternative backend)

• 📋 Environment config templates (.env.example)

• 📖 Swagger API documentation

✅ Requirements

• Flutter 3.2+ · Android Studio / Xcode

• Node.js 18+ · PostgreSQL 14+ · Redis 6+

• PHP 8.2+ / Composer (for Laravel backend) · OpenRouter API key

• Firebase project · AWS account (S3 + SES)

🛍️ Track. Alert. Save. Repeat.  |  📊 60+ endpoints · 31 tables · 31 screens · 8 languages