Head to head
Mollie vs Square
As a payments API, Square rates higher on the APIbenchmarks Index, 85.9 to 81.4, a 4.5-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Mollie | Square |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 81.4 | 85.9 |
Specifications
| Mollie | Square | |
|---|---|---|
| Best for | European local-payment-methods PSP | Omnichannel (online + in-person) payments |
| Free tier | No setup/monthly fee; test mode free, pay per transaction | Free APIs/SDKs + sandbox; sellers pay per transaction |
| Pricing | Per transaction (1.8% + €0.25 EU cards) | Per transaction (2.6% + $0.15 in-person) |
| Official SDKs | 8 languages | 12 languages |
Is Mollie better than Square?
On the APIbenchmarks Index, Square rates higher (85.9 vs 81.4). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.