Sontine - Tontine Meets Blockchain

Sontine combines the time-tested tradition of tontines (rotating savings and credit associations) with the power of Solana blockchain technology. The name merges "Solana" + "Tontine" to create a modern, transparent, and globally accessible savings platform.

✨ Key Features

• 🔗 Blockchain-Powered: Built on Solana for lightning-fast, low-cost transactions

• 🌍 Global Access: Participate in tontines worldwide without geographical restrictions

• 🔒 Transparent & Secure: Smart contracts ensure fair, automated operations

• 💰 Low Fees: Minimal transaction costs (~$0.00025 per transaction)

• 📱 Multi-Platform: Available on mobile and web with seamless wallet integration

• 🏆 Reputation System: Build trust through consistent participation

Tech Stack

Frontend (Web)

• Framework: Next.js 15 (App Router)

• Styling: Tailwind CSS with custom design system

• Language: TypeScript 5.8

• State Management: TanStack Query (React Query) v5

• Animations: Framer Motion

• Icons: Lucide React

• Forms: React Hook Form + Zod validation

Mobile

• Framework: React Native with Expo

• Navigation: Expo Router

• UI Components: React Native Paper + Custom UI system

• Fonts: Pixeloid Sans (Regular & Bold)

• Solana Integration: Solana Mobile Wallet Adapter

• State Management: TanStack Query (React Query) v5

Blockchain

• Network: Solana Mainnet/Devnet

• Wallets: Phantom, Solflare, Backpack, Glow (Mobile Wallet Adapter support)

• Smart Contracts: Rust-based Solana programs

• Currency: USDC (primary transaction currency)

Database

• ORM: Prisma

• Database: PostgreSQL (configurable)

• Off-chain Data: User profiles, group metadata, notifications

Development Tools

• Monorepo: Turborepo

• Package Manager: Bun (primary), npm (fallback)

• Linting: ESLint + Prettier

• Type Checking: TypeScript strict mode

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