NotaBill is built with privacy at its core. All your data—invoices, client information, and business details—is stored locally on your device. We do not collect, transmit, or store any of your personal information on external servers. The app works entirely offline and requires no account creation. We do not use analytics, tracking, or crash reporting services. Photo library access is only requested for selecting a business logo, and selected images remain on your device. Optional iCloud sync allows you to access your invoices across your Apple devices while maintaining full control over your data. You can export your data at any time, and you have complete ownership of all information you create in the app.