## Invoice Maker: The Easiest Way to Bill Your Clients

Stop wasting time with complex software. **Invoice Maker** is built for freelancers, small business owners, and contractors who need a simple, professional, and reliable way to create estimates, send invoices, and track payments—even when you’re off the grid.

Get started in seconds, manage your clients and items, and ensure your financial records are always accurate and ready for tax season.

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## 🔑 Key Features & Benefits

### 1. 🌐 True Offline Capability
As the name suggests, you can **create, edit, and send invoices** without an active internet connection. All your core data is stored locally using **SQLite** for instant access and reliability.

### 2. ☁️ Secure Cloud Backup (Firebase Storage)
Never worry about losing your business data.
* **Automatic Backup:** When connected, your invoices, clients, and transaction history are securely backed up to the cloud using **Firebase Storage**.
* **Cross-Device Sync:** Access your data and account seamlessly across multiple devices by logging in with **Firebase Authentication**.

### 3. 🧾 Professional Billing Suite
* **Invoices & Estimates:** Convert estimates into final invoices with a single tap.
* **Customization:** Add your company logo, terms and conditions, and customized notes.
* **Payment Tracker:** Mark invoices as paid, partially paid, or overdue. Never miss a payment again.
* **Client Management:** Save and manage all your client details for fast billing.

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## ✨ Subscription & Monetization

### Free Tier (Ad-Supported)
The app is free to use and supported by **AdMob** advertisements, allowing you to create essential documents without cost.

### Premium Subscription (In-App Purchases)
Upgrade to our premium plan via **Google Play** or **Apple App Store** to unlock features like:
* **Remove All Ads**
* **Unlimited Cloud Backup Storage**
* **Advanced Reporting**

Your subscription data is managed securely by Google and Apple to ensure seamless access to your premium features.

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Download **Offline Invoice Maker** now and streamline your billing process today! Get paid faster and spend more time running your business.