| Price from | $4.99/mo | $1.32/mo |
| Free plan | Yes | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | — |
| Plans published | 4 | 2 |
| Spec score · Freelance Invoicing Software | 9.4 (#1) | 8.1 (#16) |
| Integrations | Official pages describe integrations with Xero for accounting and Stripe and PayPal for payments. | The payment solutions page says users can connect Stripe, PayPal, or Coinbase to accept invoice payments. |
| Invoice tracking | Billdu records invoice status and can notify users when an invoice is opened or viewed. | The dashboard shows paid, overdue, and outstanding invoice status. |
| Recurring billing | Premium includes recurring invoices, and the help center lists recurring invoice tools. | Users can set up recurring invoices to automate billing for recurring customers. |
