Offline Invoice Designer

Offline Invoice Designer is a local invoice and quote builder made for freelancers, small businesses, and independent professionals who need fast, reliable billing without cloud accounts, subscriptions, or ads.

Create polished invoices in minutes, manage clients locally, and export share-ready PDF files — all on your device. Your data stays on your phone or tablet. No server uploads, no registration, and no internet required for everyday work.

KEY FEATURES

Documents
- Create, edit, duplicate, and delete invoices and quotes
- Track document status: Draft, Sent, Paid, and Overdue
- Auto-generated invoice numbers with a clear, professional format
- Full line-item editor with quantity, unit price, discounts, and tax

Clients
- Local client database with names, contacts, and addresses
- Reuse client details across multiple invoices
- Fast search and management from a dedicated Clients screen

Calculations
- Accurate money handling using minor units for precision
- Tax and discount calculations powered by BigDecimal
- Automatic subtotal, tax, and total updates as you edit

Company Profile and Branding
- Set your business name, contact details, and default tax rate
- Customize brand colors for a consistent professional look
- Configure default currency for new documents

PDF Export and Sharing
- Generate real PDF files using the Android PDF engine
- Preview invoice layout before export
- Share finished PDFs instantly via Android Share Sheet

Privacy and Offline-First Design
- Works fully offline after installation
- No ads, no analytics trackers, no mandatory sign-in
- Local Room database for documents and clients
- DataStore for app preferences

Built with modern Android technology: Kotlin, Jetpack Compose, Material Design 3, MVVM architecture, Room, and DataStore.

Perfect for:
- Freelancers and consultants
- Small service businesses
- Contractors and solo entrepreneurs
- Anyone who wants simple, private invoice management

Download Offline Invoice Designer and take control of your billing workflow — privately, locally, and on your terms.