Zendvo

www.zendvo.com

Zendvo is a cross-platform mobile application built with Flutter for iOS and Android. It enables users to send cash gifts that remain completely hidden until a predetermined unlock date and time. By using the Stellar blockchain, Zendvo transforms digital money transfers into memorable experiences filled with mystery and anticipation.

🌟 Core Value Proposition

Transform digital money transfers into memorable experiences by adding mystery, anticipation, and celebration through time-locked gifts.

🚀 Key Features

• Complete Invisibility: Recipients cannot see the amount, sender identity, or message until the exact unlock moment.
• Time-Locked Smart Contracts: Secured using Soroban on the Stellar blockchain.
• Multi-Channel Sharing: Share gifts via WhatsApp, Telegram, QR Codes, or Universal Links.
• Celebratory Unlock: Immersive unlock animations and confetti for a memorable experience.
• Easy Withdrawals: Seamlessly withdraw USDC to Nigerian bank accounts via Paystack/Flutterwave.

💻 Technology Stack

• Frontend: Flutter (iOS & Android)
• State Management: BLoC (Business Logic Component)
• Blockchain: Stellar Network (Soroban Smart Contracts)
• Currency: USDC Stablecoin
• Payments: Stripe (Sender) & Paystack/Flutterwave (Recipient)

🏗️ Architecture

The project follows a Feature-Based Clean Architecture pattern:

lib/
├── core/                  # Shared utilities and configuration
│   ├── constants/         # App constants and API endpoints
│   ├── error/             # Failure and Exception classes
│   ├── network/           # API clients and network logic
│   ├── theme/             # Design system (Colors, Typography)
│   ├── usecase/           # Generic UseCase interface
│   └── widgets/           # Global reusable UI components
└── features/              # Modularized feature folders
    └── [feature_name]/    # e.g., auth, gift_creation, withdrawal
        ├── data/          # Models, Datasources, Repository Impl
        ├── domain/        # Entities, Use Cases, Repository Interfaces
        └── presentation/  # BLoC, Pages, Feature-specific Widgets

Benefits to the Stellar Ecosystem

Zendvo showcases the power of Stellar through:

1. Stablecoin Infrastructure: Utilizing USDC for value preservation, ensuring that the gift amount remains stable from creation to unlock.
2. Soroban Smart Contracts: Implementing decentralized time-locking logic that prevents early withdrawal, providing a middleman-free guarantee of the "hidden" nature of the gift.
3. Low-Cost Transactions: Leveraging Stellar's high speed and near-zero fees to ensure that more of the sender's money reaches the recipient.
4. Real-World Utility: Connecting blockchain technology directly to Nigerian bank accounts via local payout partners, driving adoption of Web3 solutions for real-world financial needs.
5. Financial Inclusion: Providing a good on/off-ramp experience that bridges global stablecoin liquidity with local financial systems.

Who is Zendvo For?

• Diaspora Senders: Specifically targeting young adults (18-35) in the US, UK, and Canada looking for a more meaningful way to send money home to Nigeria.
• Domestic Gifting (Future Phase): Nigerians sending to Nigerians for birthdays, anniversaries, and holidays where surprise is key.
• Memorable Occasions: Perfect for Valentine's Day, graduations, and surprise celebrations where the timing of the gift is as important as the gift itself.

🛠️ Development Setup

Prerequisites

• Flutter SDK (latest stable)
• Dart SDK
• Stellar SDK configuration

Getting Started

1. Clone the repository.
2. Run flutter pub get to fetch dependencies.
3. Use flutter run to launch on a connected device or emulator.

🛡️ Compliance & Security

• Data Protection: NDPR compliant.
• Verification: Phone-based OTP verification.
• Trust: Verified WhatsApp Business API integration.

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Built with ❤️ by the Zendvo Team.