battles / Checkout
FastSpring vs Shogun
FastSpring ($750/mo/mo, vibe code 3/10) vs Shogun ($199/mo/mo, vibe code 7/10). Shogun 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
$199/mo/mo
- MVP
- 2-3 weeks
- Full replacement
- 3-6 months
easier to rebuild
get the build prompt →price gap / year
$6,612/mo
running both / year
$11,388/mo
our call
Start with Shogun — 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
Shogun
You can easily spin up a drag-and-drop visual page editor using open-source libraries like Craft.js or GrapesJS in a few days. However, reliably compiling that visual tree into clean Shopify Liquid code, managing cross-store content syncs, and running flicker-free server-side A/B tests requires serious engineering effort.
you can rebuild
- Drag-and-drop visual page builder canvas.
- Pre-built e-commerce layout templates and blocks.
- Basic A/B testing and split-path page routing.
- Mobile-responsive viewport previews and CSS overrides.
- Scheduled page publishing and draft states.
what you lose
- Library of hundreds of pre-optimized e-commerce landing page templates.
- Out-of-the-box integrations with third-party apps (Klaviyo, Yotpo, Okendo).
- Visual A/B testing engine with MTU tracking and statistical relevance calculation.
- One-click multi-store content syncing and global snippet management.
- Shogun's 24/7 live chat support and dedicated account managers on top tiers.
real moats
- Deep catalog of pre-built, high-converting e-commerce templates and UI block snippets.
- Integration ecosystem with third-party Shopify apps (Klaviyo, Yotpo, Nosto).
- Legacy lock-in from stores that built hundreds of pages in Shogun's proprietary format.
open source escape hatches
Questions people ask
Which is easier to rebuild with AI, FastSpring or Shogun?
Shogun. It scores 7/10 on vibe code with a moat of 4/10, so an AI-assisted MVP takes about 2-3 weeks and a full replacement about 3-6 months.
Which one costs less, FastSpring or Shogun?
Shogun at $199/mo/mo for a typical mid-market store. The gap between the two is about $6,612/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 Shogun?
Library of hundreds of pre-optimized e-commerce landing page templates. Out-of-the-box integrations with third-party apps (Klaviyo, Yotpo, Okendo). Visual A/B testing engine with MTU tracking and statistical relevance calculation.
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