Apex Solar Invoice Generator - Desktop Application

A professional Windows desktop application for generating and managing GST-compliant invoices for Apex Solar. Built with Tauri, React, TypeScript, and SQLite.

🎉 Latest Updates (v1.1.0)

• ⚡ SQLite Migration: Now using SQLite for robust, ACID-compliant data storage.
• ☁️ Disaster Recovery: One-time setup Google Drive recovery link to restore your data anytime.
• 🔄 Local Sync Strategy: Automatic backup to your synced cloud folders (Drive, OneDrive).
• 🇮🇳 Indian Localization: Dates now fully localized to DD-MM-YYYY format.
• 🔒 Hardened Security: Strict CSP and FileSystem scopes to protect your data.

🚀 Key Features

• ✨ Modern UI - Clean, professional interface with Dark/Light theme support.
• 💾 Local Persistence - SQLite database for high reliability and scale.
• 🔄 Auto-Backup - Set a backup folder once, and the app exports your data on every change.
• 🇮🇳 GST Ready - Automatic CGST/SGST calculations and Amount-to-Words (Indian numbering).
• 📄 PDF Generation - High-quality, brand-accurate invoice PDFs.
• 👥 Customer Management - Persistent database of your habitual customers.

📦 Installation & Setup

For Users (Download)

1. Download the latest .msi or .exe from Releases.
2. Windows Protection: Since the app is newly published, Windows may show a protection warning. Click More Info → Run Anyway.
3. Follow the installation wizard.

For Developers (Build from Source)

Prerequisites: Node.js (v18+), Rust (latest stable), Visual Studio C++ Build Tools.

1. Install Dependencies:

   npm install

2. Run Development Mode:

   npm run tauri dev

3. Build Installer:

   npm run tauri build

💾 Data & Backup Location

Your data (SQLite DB, Logos, Signatures) is stored locally at: %APPDATA%/com.apexsolar.invoicegenerator/

To Backup:

1. Go to Settings.
2. Select your Google Drive or OneDrive folder.
3. Enable Auto-Backup. The app will now keep your cloud folder updated automatically.

🛠 Project Structure

• src/: React frontend with localized components.
• src-tauri/: Rust backend, SQLite schema, and filesystem commands.
• docs/: Historical documentation and design assets.

🔒 Security

• Strict CSP: Prevents XSS and unauthorized script execution.
• Scoped FS: The app can only access its own data and user-selected folders.
• Privacy: No telemetry, no cloud accounts, no tracking. Your data is yours.

---

Built with ❤️ for Apex Solar copyright © 2026 Apex Solar. All rights reserved.