Can I vibe code Loop Subscriptions?
loopwork.co · subscriptions · $99/mo · subscription
The verdict
KINDA — BUILD THE NICHE VERSION
Loop Subscriptions costs $99 to $399/month plus a 0.75% to 1.0% tax on all subscription revenue. Merchants pay this tax primarily for three things: native Shopify Billing API integration, a self-serve customer portal (for pauses, skips, and swaps), and an automated dunning pipeline. From an engineering perspective, the subscription billing execution itself is handled entirely by Shopify Payments via the Subscription Contract API—Loop does not process credit cards or hold vaults. What you are buying is a state-machine builder wrapped around Shopify's GraphQL APIs, an App Proxy portal, and webhook handlers for failed recurring charges. Building a functional clone that manages Shopify Selling Plans, provides a basic App Proxy portal, and runs automated dunning retries takes 2-3 weeks for a senior engineer with Cursor. However, replicating Loop's edge-case handling across 30+ app integrations (Klaviyo, Gorgias, Attentive), multi-currency storefronts, and complex retention workflows (gamified loyalty streaks, bundle splitting) requires deep operational maintenance. If you are doing under $50k/mo in subscription GMV, a custom agentic build eliminates the percentage fee immediately. At massive scale, Loop's white-glove migration team and managed infrastructure justify the revenue tax.
- Replaces
- $399/mo
- MVP build time
- 2-3 weeks
- Full replacement
- 6-9 months
- Verdict
- KINDA
What it really costs
| Free Forever | free / quote | Up to 50 active subscriptions |
| Starter | $99/mo | 1.0% transaction fee, $0 per order |
| Pro | $399/mo | 0.75% transaction fee, $0 per order |
| Enterprise | free / quote | Negotiable transaction fee, volume discounts |
Flat monthly fees + transaction fee percentage (1.0% on Starter, 0.75% on Pro) with $0 per-order fee. 14-day free trial on paid plans.
- Captured
- 2026-08-04 (3 days ago)
- Verified by
- human
- Source
- loopwork.co
Assumptions: Flat monthly fees + transaction fee percentage (1.0% on Starter, 0.75% on Pro) with $0 per-order fee. 14-day free trial on paid plans.
The one-shot build prompt
Build a native Shopify Subscription Management app using Node.js, Remix, Prisma, and the Shopify App React/App Bridge SDK. CORE DATA MODELS: 1. SubscriptionPolicy: id, shopifySellingPlanGroupId, name, discountType (PERCENTAGE/FIXED), discountValue, billingInterval (DAY/WEEK/MONTH), billingFrequency, deliveryInterval, deliveryFrequency. 2. SubscriptionContract: id, shopifyContractId, customerId, status (ACTIVE/PAUSED/CANCELLED), nextBillingDate, paymentMethodToken, shippingAddressJson, lineItemsJson. 3. DunningState: id, contractId, attemptCount, lastAttemptAt, nextAttemptAt, status (PENDING/RECOVERED/FAILED). 4. CancellationFlow: id, reason, offerType (DISCOUNT/SKIP/SWAP), offerValue, targetSegment. INTEGRATIONS & GRAPHQL API CALLS: - Integrate with Shopify Admin GraphQL API (2024-04 version or newer). - Use `sellingPlanGroupCreate` to set up recurring billing options on selected products. - Use `subscriptionContractCreate` and `subscriptionDraftCommit` to initialize contracts upon order completion (`orders/create` webhook). - Listen to `subscription_contracts/update` and `subscription_billing_attempts/failure` webhooks. - Use `subscriptionBillingAttemptCreate` to trigger charge retries during the dunning workflow. CUSTOMER PORTAL (APP PROXY): - Create a Liquid/React front-end routed through Shopify App Proxy (`/apps/subscriptions`). - Authentication must use Shopify's HMAC proxy signature verification; no separate passwords. - Interface allows customers to: (1) Skip next delivery date, (2) Pause/Resume contract, (3) Swap line item variant IDs using `subscriptionContractUpdate`, (4) Update shipping address. DUNNING ENGINE: - Implement a background cron queue (using BullMQ / Redis). - When `subscription_billing_attempts/failure` fires, enqueue a dunning task. - Retry schedule: Day 1, Day 3, Day 7, Day 14. - On each retry, execute `subscriptionBillingAttemptCreate`. If success, update contract status to ACTIVE; if failed on 4th attempt, mark contract as CANCELLED and trigger a custom webhook to Klaviyo/email endpoint. REDUCTION / OUT OF SCOPE: - Do NOT build custom payment vaulting; rely 100% on Shopify Vaulting and Shopify Payments. - Do NOT build a visual flow builder drag-and-drop node editor. Use hardcoded declarative rule configs in JSON. - Ignore multi-currency conversions; assume store base currency. FAILURE MODES TO HANDLE: - Handle Shopify API rate limits (429) using exponential backoff with jitter on all mutation queues. - Prevent duplicate order creation by asserting idempotency keys on `subscriptionBillingAttemptCreate`.
$ each button prefixes agent-specific run instructions · build your own product, never copy proprietary code, trademarks or designs
Scorecard
What you can actually replace
- ✓Basic recurring product subscriptions (Shopify Selling Plans integration)
- ✓Self-serve customer portal for skips, pauses, and product swaps
- ✓Basic cancellation save flows with pause/discount offers
- ✓Automated payment recovery (dunning retries)
- ✓Shopify Theme App Extensions for selling plan widgets on product pages
- ✓One-click subscription management links via email
What you lose
- ×Managed migration support to transfer active vaulted payment tokens from older platforms.
- ×Out-of-the-box native integrations with marketing and support tools (Klaviyo, Gorgias, Attentive).
- ×Dedicated Customer Success Manager and shared Slack support channel.
- ×Gamified retention features like loyalty streak tracking and mystery rewards.
- ×Built-in A/B testing infrastructure for cancellation flows.
- ×Zero-maintenance updates as Shopify updates its Checkout and Customer Account APIs.
Why people still pay — the real moats
Moats
- — Turnkey white-glove data migration pipelines from legacy systems like Recharge or Skio without subscription downtime or token loss.
- — Deep ecosystem integrations (Klaviyo, Gorgias, Smile.io, Attentive) built over years with dedicated webhooks and state syncing.
- — Battle-tested payment retry logic optimized against millions of historical transactions to maximize recovery rates.
Hard parts
- — Ensuring strict execution order and zero double-billing during distributed payment retry schedules across thousands of contracts.
- — Maintaining zero-latency App Proxy rendering under heavy load during high-volume merchant marketing campaigns.
- — Handling complex line-item mutations (kit-splitting, variant updates) without invalidating the payment vault token inside Shopify Payments.
- — Handling asynchronous Shopify webhook failures, charge retries, and rate limits (REST/GraphQL bucket limits) during high-volume recurring billing events.
- — Maintaining edge-case compatibility with evolving Shopify Checkout Extensions and customer account APIs (Classic vs New Customer Accounts).
- — Direct operational load of handling customer billing support edge cases (e.g., partial inventory allocations during subscription creation).
Build this instead
Native Shopify Selling Plan Injector
A zero-dependency, self-hosted Shopify App Bridge component that mounts directly in Liquid templates to replace standard cart buttons with subscription widgets using native Shopify Selling Plans.
Open-Source Subscription Dunning Engine
An edge-worker based dunning pipeline that sits in front of Stripe/Shopify Payments to run ML-backed retry schedules without paying per-transaction SaaS tax.
App Proxy Subscription Portal SDK
A single React headless component library designed to build custom, passwordless subscription management portals hosted natively on Shopify App Proxy.
Prior art — do not start from zero
Open source alternatives to Loop Subscriptions
Self-hostable projects that cover most of the same ground. Free licence, your infrastructure, your on-call.
Have you actually replaced it?
Related products in this category
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Appstle orchestrates recurring orders, subscription boxes, and dunning workflows natively on e-commerce platforms like Shopify, replacing basic billing logic with customizable customer portals and checkout extensions.
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Shopify subscription management platform with AI-driven cancellation flows, predictive retention scoring, and headless customer portals.
$499/mo
FAQ
+Can I really replace Loop Subscriptions with an AI-generated app?
KINDA — THE CORE ENGINE IS TRIVIAL, THE ECOSYSTEM INTEGRATIONS ARE NOT. You can easily build a custom Shopify subscription app that eliminates Loop's 1% transaction fee using native Shopify APIs in a few weeks. However, replacing Loop's deep app store integration ecosystem, white-glove migration scripts, and battle-tested dunning algorithms requires significant ongoing development. An MVP takes roughly 2-3 weeks; matching the product properly is closer to 6-9 months.
+How long does it take to rebuild Loop Subscriptions?
A usable internal version: 2-3 weeks. A version you would sell or bet a business on: 6-9 months, mostly spent on ensuring strict execution order and zero double-billing during distributed payment retry schedules across thousands of contracts..
+What do you actually lose by leaving Loop Subscriptions?
Managed migration support to transfer active vaulted payment tokens from older platforms. Out-of-the-box native integrations with marketing and support tools (Klaviyo, Gorgias, Attentive). Dedicated Customer Success Manager and shared Slack support channel.
+Is it legal to build a Loop Subscriptions alternative?
Building a competing product with your own code is normal competition. Copying their code, trademarks, brand assets or scraping their platform is not. Use the prompt to build your own implementation of common features.
Written by Andrea Saccà — 18 years in the Magento ecosystem. Last reviewed 2026-08-04.
Scores are computed, not typed. Read the methodology.
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