Tectum - Invoice Generator

Tectum is an invoice generator app for freelancers and small business owners who need to create and send invoices without a monthly SaaS bill. Add clients, build line-item invoices with tax and discounts, and export the result as a PDF you can print or email. The app works fully offline. Client and invoice data is stored on your device in a local database, and you can export or import a full backup as a JSON file anytime. Try it free, then continue on a monthly or annual plan.