April was one of the busiest months so far while building Invoiso , a free offline invoice and billing tool for Windows and Linux. This month was less about one big headline feature and more about making the app work better for real businesses: due dates, quotations, customer imports, product imports, bank details, better PDF downloads, and a lot of layout and reliability fixes. All Changes Shipped in April 2026 GitHub · Website · Download The Focus This Month The focus for April was: Better invoice follow-up with due dates and overdue visibility Cleaner separation between invoices and quotations More flexible payment details with UPI and bank accounts Faster data entry through CSV import/export Better support for service businesses and custom line items More reliable PDFs, exports, and layouts Multiple UPI Accounts UPI support is now more flexible. Instead of storing only one UPI ID, Invoiso now supports multiple UPI payment accounts in Settings.…