battles / Checkout
FastSpring vs Purple Dot
FastSpring ($750/mo/mo, vibe code 3/10) vs Purple Dot ($499/mo/mo, vibe code 6/10). Purple Dot is the easier one to rebuild yourself — here is what you lose either way.
Checkout
$750/mo/mo
- MVP
- 2 weeks
- Full replacement
- Never (Requires global tax entities, banking rails, legal indemnification)
Checkout
$499/mo/mo
- MVP
- 2 weeks
- Full replacement
- 3-6 months, due to complex card tokenization, deferred payment rules, and ERP integrations
easier to rebuild
get the build prompt →price gap / year
$3,012/mo
running both / year
$14,988/mo
our call
Start with Purple Dot — highest vibe code, weakest moat.
FastSpring
FastSpring is not just checkout software; it assumes legal and financial liability as the Merchant of Record. Rebuilding the checkout UI in React is trivial, but self-hosting global VAT/GST compliance, localized payment acquirers, and fraud liability requires massive legal infrastructure.
you can rebuild
- Embeddable checkout UI modal and hosted payment pages
- Basic subscription management and recurring billing webhooks
- License key generation and digital file fulfillment triggers
- Customer portal for invoice downloads and subscription cancellations
- Multi-currency storefront price conversion displays
what you lose
- Merchant of Record legal status and cross-border indirect tax liability assumption
- Automated VAT/GST calculation, collection, and filing across 200+ global jurisdictions
- Global payment gateway routing, localized payment methods (iDEAL, Pix, Alipay), and acquirer optimization
- Merchant-level chargeback and fraud liability protection
- Payer of record status handling international currency conversion payouts
real moats
- Global legal and tax registration network with local tax authority filings
- Underwritten acquiring bank relationships and payment processing infrastructure
- Financial liability indemnification for chargebacks, VAT audits, and sanctions checks
open source escape hatches
- Kill Bill Apache-2.0
- Lago AGPL-3.0
- Hyperswitch Apache-2.0
Purple Dot
If your store takes immediate payment for pre-orders, building this with custom Shopify theme extensions and metafields is straightforward. Purple Dot is only necessary if you require card vaulting (Stripe SetupIntents), re-authorizations, and automated billing deferred until physical dispatch.
you can rebuild
- Storefront PDP pre-order button and estimated shipping date widgets
- Customer self-serve address updates and order status portal
- Automated delay notification emails and shipping updates
- Pre-order inventory allocation rules and tagging
- Basic backorder toggles based on stock status
what you lose
- Turnkey PCI-compliant payment vaulting for deferred charge workflows
- Automated handling of card expiry and payment retry flows prior to dispatch
- Pre-built integrations with major 3PLs for automated charge-on-ship triggers
- Built-in compliance logic for pre-order billing regulations
- Ready-to-use Shopify Checkout Extensibility block with zero maintenance
real moats
- Deep payment gateway integrations optimized for extended authorization holds
- Battle-tested edge case handling for deferred payment capture at scale
- Off-the-shelf connectors for complex enterprise ERPs and warehouse management systems
Questions people ask
Which is easier to rebuild with AI, FastSpring or Purple Dot?
Purple Dot. It scores 6/10 on vibe code with a moat of 3/10, so an AI-assisted MVP takes about 2 weeks and a full replacement about 3-6 months, due to complex card tokenization, deferred payment rules, and ERP integrations.
Which one costs less, FastSpring or Purple Dot?
Purple Dot at $499/mo/mo for a typical mid-market store. The gap between the two is about $3,012/mo a year.
What do I lose if I replace FastSpring?
Merchant of Record legal status and cross-border indirect tax liability assumption Automated VAT/GST calculation, collection, and filing across 200+ global jurisdictions Global payment gateway routing, localized payment methods (iDEAL, Pix, Alipay), and acquirer optimization
What do I lose if I replace Purple Dot?
Turnkey PCI-compliant payment vaulting for deferred charge workflows Automated handling of card expiry and payment retry flows prior to dispatch Pre-built integrations with major 3PLs for automated charge-on-ship triggers
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