battles / Payments
Adyen vs Splitit
Adyen ($1,180/mo/mo, vibe code 3/10) vs Splitit ($500/mo/mo, vibe code 3/10). Splitit is the easier one to rebuild yourself — here is what you lose either way.
Payments
$1,180/mo/mo
- MVP
- 2-3 weeks (for a simple API wrapper around existing acquirers)
- Full replacement
- 10+ years (requires banking licenses and scheme acquirer memberships)
Payments
$500/mo/mo
- MVP
- 2 weeks
- Full replacement
- 12-24 months, due to PCI-DSS Level 1 compliance, card scheme authorizations, and acquirer underwriting
easier to rebuild
get the build prompt →price gap / year
$8,160/mo
running both / year
$20,160/mo
our call
Start with Splitit — highest vibe code, weakest moat.
Adyen
Adyen is an enterprise financial infrastructure provider holding full banking licenses and direct scheme acquirer status globally. You cannot replicate card network connectivity, regulatory compliance, local acquiring rails, and physical POS hardware integration with AI code.
you can rebuild
- Unified API schema for initializing web checkouts.
- Basic card tokenization and iframe UI components.
- Rules engine for payment routing based on country or currency.
- Webhook payload parsing and status aggregation dashboards.
- Basic payment method selection UI (iDEAL, Klarna, Apple Pay wrappers).
what you lose
- Direct Interchange++ pricing models that pass true card cost savings through to large merchants.
- Local acquiring licenses in 30+ markets that boost card authorization rates by 2-5%.
- Omnichannel transaction unification across e-commerce backends and physical terminal fleets.
- Zero-dependency financial rails (Adyen does not rely on third-party processor banks).
- Enterprise risk engines (3D Secure 2 authentication and dynamic exemption management).
real moats
- Full banking licenses in Europe, the US, Singapore, Australia, and Brazil.
- Direct acquiring connections to card networks, bypassing legacy intermediary processor markups.
- Local entity acquiring in 30+ countries, allowing high card approval rates without cross-border declines.
- In-house built unified code base spanning online checkout, in-person POS hardware, and unified reporting.
open source escape hatches
- Hyperswitch Apache-2.0
- Killbill Apache-2.0
- BTCPay Server MIT
Splitit
Building a script to charge a stored payment token every 30 days is straightforward. However, replicating Splitit's core model—holding total purchase amounts against existing credit limits and re-authorizing them without triggering fraud blocks—requires specialized acquirer integration and strict regulatory compliance.
you can rebuild
- Storefront installment calculator widget
- Scheduled monthly off-session payment charge scheduler
- Basic email notifications for failed card charges
- Customer billing portal for card updates
- Merchant analytics dashboard for installment tracking
what you lose
- Automated credit hold maintenance against customer credit card limits
- Card scheme compliant long-term re-authorization strategies
- PCI-DSS Level 1 card vaulting and tokenization infrastructure
- Native checkout app integrations for major ecommerce platforms
- Merchant risk underwriting and dispute management
real moats
- PCI-DSS Level 1 certification and regulatory compliance
- Direct payment acquirer integrations and card scheme authorizations
- Underwriting framework for handling merchant default risk
open source escape hatches
- Kill Bill Apache-2.0
- Lago AGPL-3.0
- Payload CMS MIT
Questions people ask
Which is easier to rebuild with AI, Adyen or Splitit?
Splitit. It scores 3/10 on vibe code with a moat of 6/10, so an AI-assisted MVP takes about 2 weeks and a full replacement about 12-24 months, due to PCI-DSS Level 1 compliance, card scheme authorizations, and acquirer underwriting.
Which one costs less, Adyen or Splitit?
Splitit at $500/mo/mo for a typical mid-market store. The gap between the two is about $8,160/mo a year.
What do I lose if I replace Adyen?
Direct Interchange++ pricing models that pass true card cost savings through to large merchants. Local acquiring licenses in 30+ markets that boost card authorization rates by 2-5%. Omnichannel transaction unification across e-commerce backends and physical terminal fleets.
What do I lose if I replace Splitit?
Automated credit hold maintenance against customer credit card limits Card scheme compliant long-term re-authorization strategies PCI-DSS Level 1 card vaulting and tokenization infrastructure
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