Payment Gateway / PSP
Adyen and Unit both show up under the payment gateway category, but they solve slightly different jobs. Adyen uses pricing that starts at EUR 0.11 + scheme fee, while Unit runs on custom (sales-led) pricing. Lock-in is medium for Adyen and high for Unit. Transparency lands at 3/5 versus 1/5. Adyen fits teams working on enterprise with $10M+ TPV needing global coverage, while Unit is a closer match when the job is FDIC-insured bank accounts and ACH for US fintech startups. Worth noting: Adyen is explicitly not for solo projects; Unit is explicitly not for Non-US teams or companies needing a plain payment gateway. The honest trade-off: Adyen trades off on startup with <$1M TPV — minimum fees are high; Unit trades off on sponsor bank risk post-US BaaS turbulence. On the plus side, Adyen highlights enterprise with $10M+ TPV needing global coverage, while Unit points to accounts, cards, ACH, wire, lending unified.
Quick take
Adyen is for enterprise with $10M+ TPV needing global; Unit is for FDIC-insured bank accounts and ACH for; decide on pricing model.
 Adyen | | |
|---|---|---|
| Category | Payment Gateway / PSP | Payment Gateway / PSP |
| Pricing Model | hybrid | custom |
| Entry Price | EUR 0.11 + scheme fee | — |
| Free Tier | No | No |
| Billing Complexity | medium | — |
| Developer Experience | 5/5 | 5/5 |
| Pricing Transparency | 3/5 | 1/5 |
| Lock-in Level | medium | high |
| Migration Complexity | medium | — |
| Data Portability | CSV import/export recurring payment details | — |
| Enterprise | Available | — |
| GitHub Stars | 245 | — |
| License | MIT | — |
Medium — proprietary tokens, but CSV import/export under
Migration difficulty: medium
Data you keep: CSV import/export recurring payment details
API standard: Proprietary
Risk notes: Medium — proprietary tokens, but CSV import/export under
💡 Moderate effort required. Export data before canceling
Choose Adyen if your project is enterprise with $10M+ TPV needing global coverage, medium lock-in is an acceptable trade-off.
Not for: Solo projects
Choose Unit if your project is FDIC-insured bank accounts and ACH for US fintech startups, you are prepared for a sales-led custom-pricing conversation, you are willing to accept the high lock-in called out in our data.
Not for: Non-US teams or companies needing a plain payment gateway
Check each tool's dedicated page for deeper reviews, setup notes, and pros/cons.
Adyen uses pricing that starts at EUR 0.11 + scheme fee, and Unit uses custom (sales-led) pricing. The pricing models are different, so a direct cheaper-than comparison depends on your volume and usage pattern.
Our data puts Adyen at medium lock-in (proprietary tokens, but csv import/export under), and Unit at high lock-in (baas partner integrations hard to migrate). Migration is feasible but not trivial — budget time for re-integration, data export, and parallel running before cutover.
Both score 5/5 on developer experience in our data, so there's no clear winner on that axis. Adyen does edge ahead on pricing/docs transparency (3/5 vs 1/5), which can make evaluation faster.
Unit is a reasonable alternative to Adyen when your workload leans more toward US fintech startups needing full-stack banking APIs with modern developer experience than enterprise. The pricing model shifts too — Adyen is pricing that starts at EUR 0.11 + scheme fee, Unit is custom (sales-led) pricing — so expect the cost profile to change as well. One caveat: Unit is explicitly not for Non-US teams or companies needing a plain payment gateway, so check that constraint against your use-case before switching.
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