Decision Support · Side-by-side
Compare pricing, strengths, and use cases so it is easier to pick the right fit.
Change tools
For everyday users looking to split purchases into payments, Affirm is the clear winner—it's a consumer-friendly 'buy now, pay later' tool you can use at thousands of online stores. Sardine is an enterprise fraud-detection platform for banks and large businesses, not something a regular person would ever use directly. The single biggest difference: Affirm helps you spend money; Sardine helps companies stop fraud.
Affirm
Sardine
Scores at a glance
Choose Affirm if
Choose Sardine if
Key differences
Facts side by side
| Affirm | Sardine | |
|---|---|---|
| Free plan | ||
| Mobile app | ||
| API access |
Common questions
Yes—Affirm is designed exactly for that. You select it at checkout, get approved in seconds, and pay in installments. Sardine has nothing to do with consumer payments.
No. Sardine is a fraud prevention platform for businesses. You will never interact with it directly as a shopper.
No. Affirm never charges late fees. If you miss a payment, you simply won't be able to use Affirm again until you catch up.
Affirm is easier—you just integrate a checkout button on your e-commerce site. Sardine requires dedicated engineering and is meant for enterprise-scale operations.
No—Sardine is not sold to individuals. It's priced for large enterprises and has no consumer version.
Affirm is a consumer-friendly payment tool; Sardine is enterprise fraud software—they serve completely different people.
If you're a regular person looking to pay over time without late fees, go with Affirm—it's free to use, widely accepted, and has a stellar app rating. Sardine is powerful but completely irrelevant to everyday users; it's built for large companies fighting financial crime. Stick with Affirm for your personal purchases.
