Billy API vs Twinfield API
Billy API
billy.dkTwinfield API
developers.twinfield.comSide by side
| Figure | Billy API | Twinfield API |
|---|---|---|
| Price from | 160 DKK/mo | €58/mo |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · Accounting APIs | 9.0 (#2) | 7.1 (#22) |
| Authentication | The documentation describes company access tokens and HTTP Basic Auth; access tokens are permanent and do not expire. | Twinfield uses OpenID Connect for identity information and OAuth 2.0 for authentication, with implicit and authorization code flows supported. |
| Integrations | Billy’s integration directory includes connections for services such as Shopify, WooCommerce, Salary, MobilePay, and Lunar. | Twinfield Bookkeeping says it connects with more than 300 different systems, and integrations must be certified to join its partner community. |
| Intended users | Billy describes its accounting software as helping self-employed people manage bookkeeping, invoices, and VAT. | Twinfield describes its accounting software and API integrations as serving advisors and businesses, with features for collaborative accounting and linking business systems. |
Plans
Billy API
- FreeFree
- Basic160 DKK a month
- Plus295 DKK a month
- Complete595 DKK a month
Twinfield API
- Extra Boekhouden€58 a month
- MKB Boekhouden€78.50 a month
- Compleet Boekhouden€114.50 a month
In their own words
Twinfield API
Twinfield API has no write-up on Specifiction yet; its figures are above.