battles / Payments
Gr4vy vs Tabby
Gr4vy ($2,500/mo/mo, vibe code 3/10) vs Tabby ($500/mo/mo, vibe code 3/10). Gr4vy is the easier one to rebuild yourself — here is what you lose either way.
Payments
$2,500/mo/mo
- MVP
- 1 month
- Full replacement
- 12-24 months, due to PCI-DSS Level 1 certification, token vault security, and dozens of payment gateway integrations
easier to rebuild
get the build prompt →Payments
$500/mo/mo
- MVP
- 1 week
- Full replacement
- Never (Requires banking licenses, capital reserves, and credit facilities)
price gap / year
$24,000/mo
running both / year
$36,000/mo
our call
Start with Gr4vy — highest vibe code, weakest moat.
Gr4vy
Building a basic routing engine is straightforward, but replicating a secure, PCI-DSS Level 1 compliant token vault and dozens of gateway integrations requires continuous compliance audits and security overhead. Replacing Gr4vy with custom code introduces massive regulatory liability and integration maintenance burden.
you can rebuild
- Basic conditional payment routing rules engine
- Merchant admin dashboard for transaction monitoring
- Simple failover retry logic between two primary gateways
- Normalized unified checkout API schema
- Transaction metadata logging and analytics
what you lose
- PCI-DSS Level 1 compliant card data tokenization vault
- Out-of-the-box integrations with 50+ payment gateways and APMs
- Automatic 3D Secure 2 (3DS) / SCA step-up authentication handling
- Infrastructure isolation per merchant account
- Continuous API maintenance and compliance updates from payment providers
real moats
- PCI-DSS Level 1 certification and security liability absorption
- Broad pre-built integration catalog with PSPs, buy-now-pay-later (BNPL) providers, and fraud engines
- Universal token vaulting capable of cross-PSP token migration
open source escape hatches
- Hyperswitch Apache-2.0
- Kill Bill Apache-2.0
- Medusa Payment Plugins MIT
Tabby
Tabby is not a software tool; it is a licensed financial institution and credit provider operating in the GCC. While building an installment math widget takes an afternoon, underestimating the capital reserves, credit bureau integrations, and central bank regulations required will kill the project immediately.
you can rebuild
- Checkout installment pricing preview widget
- Merchant analytics and settlement dashboard
- Plugin integrations for Shopify and WooCommerce
- Webhook notifications for payment capture and refunds
- Order status synchronization and tracking links
what you lose
- Capital balance sheet to fund customer purchases upfront
- Regulatory BNPL licenses from SAMA (Saudi Arabia) and CBUAE (UAE)
- Real-time integrations with regional credit bureaus (SIMAH, AECB)
- Consumer shopping app marketplace driving direct acquisition traffic
- Automated collections infrastructure and delinquency management
real moats
- Central bank licenses and regulatory compliance in GCC markets
- Institutional credit facilities to finance consumer receivables
- Massive regional consumer network and shopping directory app
open source escape hatches
- Kill Bill Apache-2.0
- Hyperswitch Apache-2.0
- Active Merchant MIT
Questions people ask
Which is easier to rebuild with AI, Gr4vy or Tabby?
Gr4vy. It scores 3/10 on vibe code with a moat of 6/10, so an AI-assisted MVP takes about 1 month and a full replacement about 12-24 months, due to PCI-DSS Level 1 certification, token vault security, and dozens of payment gateway integrations.
Which one costs less, Gr4vy or Tabby?
Tabby at $500/mo/mo for a typical mid-market store. The gap between the two is about $24,000/mo a year.
What do I lose if I replace Gr4vy?
PCI-DSS Level 1 compliant card data tokenization vault Out-of-the-box integrations with 50+ payment gateways and APMs Automatic 3D Secure 2 (3DS) / SCA step-up authentication handling
What do I lose if I replace Tabby?
Capital balance sheet to fund customer purchases upfront Regulatory BNPL licenses from SAMA (Saudi Arabia) and CBUAE (UAE) Real-time integrations with regional credit bureaus (SIMAH, AECB)
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