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RevWise 🧠💰📱

RevWise is a web application that helps you decide whether or not to buy a product by scanning it with your mobile camera and evaluating its financial impact.

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🚀 Key Features

• 📷 Scan products with your mobile camera.
• 🤖 Identify products using Google Vision API.
• 💸 Estimate prices using SerpAPI.
• 📝 Manually confirm price and target purchase date.
• 💬 Chatbot-based evaluation of your purchase decision.
• ✅ Full frontend-backend integration using Next.js and FastAPI.

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🧩 Tech Stack

• Frontend: Next.js 14, React, Tailwind CSS, shadcn/ui.
• Backend: FastAPI + Google Cloud Vision API + SerpAPI.
• Communication: HTTP (fetch, FormData, JSON).
• Temporary storage: sessionStorage.

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🛠️ Local Setup

1. Clone the repository

git clone https://github.com/yourusername/revwise.git
cd revwise

2. Install frontend dependencies

npm install

3. Run the frontend (Next.js)

npm run dev -- --host

By default: http://localhost:3000

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4. Configure and start the backend (FastAPI)

Requirements:

• Python 3.10+
• google_credentials.json in the project root
• .env file with your SerpAPI key:

SERPAPI_KEY=your_api_key_here

Install and run:

pip install -r requirements.txt
uvicorn main:app --host 0.0.0.0 --port 8000 --reload

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📱 Test on iPhone or Mobile Device

1. Ensure your iPhone and Mac are on the same Wi-Fi network.
2. Find your Mac's local IP:

ipconfig getifaddr en0

1. Update fetch() calls in the frontend to use the IP:

fetch("http://192.168.1.42:8000/identify", { ... })

1. Open in Safari or Chrome on your phone:

http://192.168.1.42:3000

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🧪 Key API Endpoints

POST /identify

• Input: Image (multipart/form-data)
• Output:

{
  "product_name": "Nike Sneakers",
  "description": "Nike Air Max, sneakers...",
  "estimated_price": 120.0,
  "price_error": null
}

POST /evaluate

• Input: product price and user data
• Output: chatbot recommendation

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✨ Credits & Libraries

• Google Cloud Vision API
• SerpAPI - Google Shopping
• shadcn/ui
• Next.js
• FastAPI

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🧠 Future Improvements

• Real banking integration (Plaid, BBVA API, etc.)
• Voice recognition
• Saved goals history
• Full chat memory and interaction tracking

Built With

• fastapi
• googlecloudvisionapi
• next.js
• react
• serpapi