Inkvoice vs Sleek Bill
Inkvoice
inkvoice.appSleek Bill
sleekbill.comSide by side
| Figure | Inkvoice | Sleek Bill |
|---|---|---|
| Price from | $4.99/mo | $5.75/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | — |
| Android | — | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 5 | 10 |
| Spec score · Invoicing software | 9.0 (#12) | 8.6 (#23) |
| Client portal | Yes | Yes |
| E-invoicing | An opt-in module supports EN 16931 e-invoices, including ZUGFeRD 2.2, XRechnung, and PEPPOL BIS formats. | Sleek Bill can generate GST e-invoices with IRN and QR codes and create e-way bills from invoices. |
| Free plan | Yes | Yes |
| Integrations | The product describes outgoing webhooks for n8n, Zapier, and Make, plus API-token access for external tools and scripts. | The custom ERP page describes integrations for payment gateways and banking, Shopify and WooCommerce, WhatsApp, SMS, email, e-invoicing, and e-way bills. |
| Multi-currency invoicing | Yes | Yes |
| Recurring invoices | Yes | Yes |
| Support | The self-hosted plan lists community support on GitHub, while Cloud Pro lists priority support. | The contact page lists support hours of Monday to Saturday, 10 AM–7 PM IST, and says response time is usually within 2–4 hours. |
Plans
Inkvoice
- Cloud FreeFree
- Cloud Starter$4.99 a month
- Cloud Pro$14.99 a month
- Self-hosted open-source buildFree
- Self-host the open-source buildFree
Sleek Bill
- Free ForeverFree
- Premium Business Plan$69 a year
- Multi User Plan$99 a year
- Premium LIFETIME License$299 a month
- Premium Yearly Plan$99 a year
- Premium + Inventory LIFETIME License$399 a month
- Premium + Inventory Yearly Plan$199 a year
- Free ForeverFree
- Premium LIFETIME License$299, paid once
- Premium + Inventory LIFETIME License$399, paid once
In their own words
Inkvoice
Inkvoice is open-source invoicing software for freelancers, small businesses, and small teams. It creates invoices and quotes, which can be turned into invoices, shared through links, or exported as PDFs. Recurring invoices can be generated automatically on monthly, quarterly, or annual schedules. Customers can pay through Stripe or PayPal checkout; users can also record manual and partial payments. The software tracks billable expenses and provides tax summaries, accounts-receivable aging, profit-and-loss reports, and cash-flow forecasts. An opt-in e-invoicing module supports EN 16931 formats, including ZUGFeRD 2.2, XRechnung, and PEPPOL BIS. Inkvoice runs on the web, Linux, through an API, or as a self-hosted deployment. The self-hosted build stores application data in a SQLite file and can run in a Docker container. Cloud Free is free, with one user and five customers; Cloud Starter is $4.99 a month, and Cloud Pro is $14.99 a month. Both paid cloud plans offer yearly billing with two months free.
Sleek Bill
Sleek Bill has no write-up on Specifiction yet; its figures are above.