Bonsai vs FastBill
Bonsai
hellobonsai.comFastBill
fastbill.comSide by side
| Figure | Bonsai | FastBill |
|---|---|---|
| Price from | $15/mo | €10/mo |
| Free plan | — | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| macOS | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Plans published | 4 | 4 |
| Spec score · Freelance Invoicing Software | 9.2 (#3) | 8.3 (#15) |
| API | The Bonsai API covers contacts, companies, deals, projects, tasks, subtasks, comments, time entries, and invoices. | FastBill provides an XML/JSON web service API, and its documentation says requests are encrypted with SSL in transit. |
| Integrations | Official integration resources cover QuickBooks Online, Xero, Zapier, Calendly, Gmail, Outlook, Zoom, HiBob and a Bonsai MCP server. | FastBill states that it offers more than 30 partner integrations and a Zapier app connecting to more than 4,000 business tools. |
| Product | Bonsai consolidates projects, clients, and billing in a platform for service businesses. | FastBill is a cloud based invoicing and bookkeeping program for freelancers, self-employed people, and companies. |
| Security | Bonsai says it achieved SOC 2 Type II compliance on July 3, 2025, and describes enforced multifactor authentication and least-privilege access. | FastBill says it stores data on servers in Germany and provides two-factor authentication; its banking help page says finAPI transaction data is only visible to the account's main user by default. |
| Support | Paid subscribers can contact support in the app or by email, and Bonsai says its Help Center has over 240 articles. | The terms state that customer support is provided by ticket at [email protected], alongside an FAQ help center; Premium includes premium support. |
Plans
In their own words
Bonsai
Bonsai brings client work, project delivery, and billing into one platform for service businesses. Client management includes CRM, deals, estimates, proposals, contracts, retainers, forms, a client portal, and scheduling. Project tools cover tasks, Gantt charts, time tracking, budgets, timesheets, reports, and resource planning. Financial tools include invoicing, payments, rate cards, expenses, forecasting, and accounting integrations. Premium lists QuickBooks, Xero, Zapier, Calendly, and Google integrations. The API covers contacts, companies, deals, projects, tasks, subtasks, comments, time entries, and invoices. Access is available through the website, iPhone and Android apps, Mac OS, an API, and an extension. Monthly per-user plans are Basic at 15.00 USD, Essentials at 25.00 USD, Premium at 39.00 USD, and Elite at 59.00 USD. A pricing note lists $9/user/mo annually. The 7-day trial provides full, unlimited access; continuing requires a plan and payment details. Elite requires at least three users.