International Remittance Fee Comparison Platform
1. Executive Summary
SendFeeCompare is a remittance comparison platform designed to help users find the best rates and lowest fees when sending money between the United States and South Korea. The application automatically scrapes real-time exchange rates from multiple providers and presents a clear comparison of total costs including fees, exchange rate margins, and available promotions.
Key Value Propositions
- Rate Comparison: Scraping of exchange rates from providers every hours
- Cost Breakdown: Shows fees, exchange rate, and total costs in a clear format
- Promotion Tracking: Displays current promotions and discounts
- Bi-directional Support: Supports both US→KR and KR→US transfer directions
- Multi-currency Display: Shows costs in both USD and KRW for easy understanding
- Multi-language Support: Full Korean and English language support
- Mobile-responsive Design: Optimized for both desktop and mobile users
Vision Statement
To empower individuals to make informed decisions about international money transfers by providing rate comparisons of all available options, ultimately saving users time and money on every transfer.
2. Target Users
Primary User: “Korean-American Remittance Sender”
Goals:
- Find the lowest total cost for each transfer
- Understand exactly how much recipient will receive
- Stay informed about current promotions
- Make quick decisions with confidence
- Save money on recurring transfers
3. Core Features
3.1 Implemented Features
| Feature | Description |
|---|---|
| Provider Comparison | Compare 9+ remittance providers side-by-side |
| Fee Breakdown Modal | Detailed breakdown of all costs |
| Promotion Display | Current promotions with date-based filtering |
| Bi-directional Support | US→KR and KR→US transfers |
| Language Toggle | Korean/English interface |
| Responsive Design | Mobile and desktop optimized |
| Provider Links | Direct links to provider websites |
| Failure Alerts | Slack notifications on scraping failures |
3.2 Amount Tiers
US → KR (USD):
- $100, $500, $1,000, $2,000, $5,000, $10,000
KR → US (KRW):
- ₩100,000, ₩500,000, ₩1,000,000, ₩5,000,000
4. Technology Stack
4.1 Frontend
| Technology | Version | Purpose |
|---|---|---|
| Next.js | 16.x | Full-stack React framework (App Router) |
| React | 19.x | UI library |
| TypeScript | 5.9.x | Type safety |
| Tailwind CSS | 4.x | Utility-first CSS framework |
| Radix UI | Latest | Accessible UI primitives (Dialog, Select) |
| Lucide React | Latest | Icon library |
| Zod | 4.x | Schema validation |
Framework Version Rationale:
- Next.js 16 with App Router: Latest stable version with improved performance, server components, and better caching
- React 19: Latest features including improved server components support
- Tailwind CSS v4: Significant performance improvements and new features
4.2 Backend
| Technology | Purpose |
|---|---|
| Next.js API Routes | Serverless API endpoints |
| Supabase | PostgreSQL database with real-time capabilities |
| Supabase Auth | Authentication (future) |
4.3 Data Collection
| Technology | Purpose |
|---|---|
| Puppeteer | Browser automation for dynamic sites |
| @sparticuz/chromium | Serverless-compatible Chromium |
| Cheerio | HTML parsing for static content |
4.4 External APIs
| Service | Purpose | Update Frequency |
|---|---|---|
| exchangerate-api.com | Mid-market exchange rates | Every hours |
| Provider Websites | Provider-specific rates | Every hours |
4.5 DevOps & Infrastructure
| Service | Purpose |
|---|---|
| Vercel | Hosting and serverless functions |
| GitHub Actions | CI/CD and scheduled scraping |
| Supabase | Database hosting |
| Slack Webhooks | Failure notifications |
Last Updated: 2026-01-08
This post is licensed under CC BY 4.0 by the author.