Invoxa

Invoxa is a web and iOS invoice maker for freelancers, contractors, and small businesses that need to create, edit, and send professional invoices quickly from desktop or mobile.

Key capabilities include:

• Customizable invoice templates with branding, PDF export, and support for adding attachments
• Multi-currency and multi-language invoicing for international clients, plus automated conversions
• Automated tax calculations, payment reminders, and real-time payment tracking with reporting to monitor overdue invoices and cash flow
• Recurring billing, bulk invoicing, and one-click duplication, plus estimates-to-invoices conversion

Pricing: Freemium, with a free trial (3-day full access for new users). Pro starts at $4.99/month billed yearly ($59.99/year), with monthly options starting around $6.00.

Notable for combining offline mobile access with cloud storage to reduce data loss, and for built-in payment gateway integrations (Square, Stripe, PayPal) designed to help small teams and solo operators stay organized and get paid faster.