How Bold Subscriptions was built — and why that matters now

Bold built their subscription product when Shopify had no native subscription API. They solved the problem using custom checkout flows, subdomain redirects, and injected JavaScript — approaches that worked at the time but increasingly diverge from how Shopify wants subscriptions to work in 2026. Every Shopify checkout update creates a potential regression for Bold stores, and features like Shop Pay, Google Pay, and Buy with Prime work inconsistently because the checkout isn't truly native.

  • Custom checkout flows require maintenance after every Shopify checkout update
  • Shop Pay, Apple Pay, and Google Pay support is limited by legacy architecture
  • Storefront JavaScript injected on every page adds page load latency
  • Shopify is investing in the native Subscription Contracts API — not legacy workarounds

Native Shopify checkout: what it means for conversion

Apps built on Shopify's Subscription Contracts API go through the standard Shopify checkout. There is no redirect, no subdomain, no custom payment page. Customers see the same checkout they are used to from one-time purchases. Accelerated payment methods like Shop Pay — which can increase checkout conversion by 20–30% — work out of the box. SimpleSubscription is fully native; Bold's architecture was built around a world where this was not possible.

  • Native checkout means Shop Pay, Apple Pay, Google Pay all work without configuration
  • No checkout redirect eliminates a common abandonment point in the subscription funnel
  • Payment methods stored natively by Shopify, reducing PCI scope
  • Checkout UI extensions can be applied to subscription products just like one-time products
  • Shopify's accelerated checkout can improve subscription signup conversion by 20–30%

Storefront performance: what script injection costs you

Bold injects JavaScript on storefront pages to detect subscription products and render the subscribe widget. This adds a render-blocking or late-loading asset to every product page, even those that have no subscription offering. Modern Core Web Vitals scores increasingly influence search ranking and conversion. SimpleSubscription's widget loads as a native Shopify app extension — scoped only to products with active selling plans, and integrated with Shopify's asset pipeline.

  • Bold's injected JS adds weight to every product page regardless of subscription status
  • SimpleSubscription widget loads as a Shopify theme extension — scoped and optimised
  • Faster product pages correlate with higher conversion and better SEO rankings
  • No third-party script dependency means no outage risk from Bold's CDN

Migrating Bold subscribers to native contracts

The migration from Bold involves converting legacy subscriber records into native Shopify Subscription Contracts. This is the technically complex part — payment tokens need to be re-mapped, subscription intervals need to be expressed as selling plans, and billing dates need to carry over. SimpleSubscription's migration team handles all of this. Most Bold migrations complete in 7–10 business days with no subscriber action required.

  • Legacy payment tokens mapped to native Shopify payment methods during migration
  • Subscription intervals converted to native Shopify selling plans
  • Billing dates and histories preserved through the conversion process
  • Subscribers do not need to re-enter payment information or re-enroll
  • Bold and SimpleSubscription run in parallel during migration — no revenue gap

Pricing comparison: Bold vs SimpleSubscription

Bold's pricing structure includes a monthly plan fee plus per-transaction fees on recurring orders. The exact rate depends on your plan tier and volume. SimpleSubscription charges a flat $79/mo on the annual plan with zero transaction fees on recurring orders. At modest subscription volumes, the math favours SimpleSubscription clearly. The feature set is comparable — both offer customer portal, dunning, analytics, and build-a-box.

  • Bold charges per-transaction fees on recurring orders across most plans
  • SimpleSubscription: $79/mo annual, $0 transaction fees on all plans
  • At $5k MRR the transaction fee difference alone typically exceeds SimpleSubscription's cost
  • Both apps offer comparable feature sets: portal, dunning, analytics, build-a-box
  • Free white-glove migration included — no cost to switch