| Price from | €10/mo | $9/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | — |
| Plans published | 4 | 4 |
| Spec score · Freelance Invoicing Software | 8.3 (#15) | 8.7 (#9) |
| Headquarters | Frankfurt am Main, Germany | Bronxville, New York, United States |
| Integrations | FastBill states that it offers more than 30 partner integrations and a Zapier app connecting to more than 4,000 business tools. | Indy lists Google Calendar, PayPal, Stripe, and Zapier integrations; Gmail integration is included with Pro. |
| Product | FastBill is a cloud based invoicing and bookkeeping program for freelancers, self-employed people, and companies. | Indy is an all-in-one set of tools for managing a freelance business, from proposals and contracts to time tracking, invoices, and payments. |
| Security | 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. | Indy states that it uses SSL encryption for payments and industry-standard encryption and safeguards for user data. |
| Support | The terms state that customer support is provided by ticket at [email protected], alongside an FAQ help center; Premium includes premium support. | Free users receive email support with a stated 24–48 business-hour response window, while Pro users get live chat during business hours. |
