Widget visibility
The subscription choice exists and remains usable on desktop and mobile.
Read-only subscription QA for Shopify agencies
Catch subscription regressions before your clients do.
PlanLatch compares configured Shopify selling plans with the live widget, product form, and temporary cart on desktop and mobile—then returns a reproducible failure report your team can act on.
One public product URL · no installation · no customers, orders, or subscription mutations
CLIENT STORE / PRODUCT / COFFEE09:42:18
01Subscribe selectedUI state confirmed
02Form contains planselling_plan=9001
03Cart lost the planallocation: null
REPRODUCIBLE INCIDENT
Subscription is lost before the cart
The storefront showed Subscribe and submitted a plan, but the Shopify cart line returned without an allocation.
Suggested next checkInspect custom add-to-cart, bundle, or cart-drawer code for a dropped
selling_plan value.STORE SCOPEOne authorized store
ACCESSProducts only
SAFETYAnonymous cart, cleared
OUTPUTEvidence, not a score
The storefront contract
Five states every subscription implementation must preserve.
A visible widget is not proof. PlanLatch follows the state Shopify actually needs from purchase intent to cart allocation.
Subscribe → form
Selecting Subscribe puts the correct selling_plan into the active product form.
Form → cart
The temporary cart line returns from Shopify with selling_plan_allocation attached.
One-time means one-time
Switching back to one-time clears every stale selling-plan value.
Variant-switch stability
Changing a variant does not silently restore an unwanted subscription.
Agency workflow
A deterministic re-check after every risky change.
- 1
Authorize
Install PlanLatch only on client-approved stores. The Shopify app requests read-products access and no customer or order scopes.
- 2
Trigger
Re-check after theme, product, variant, bundle, or subscription-app changes, with scheduled checks between releases.
- 3
Prove
Load the live storefront in isolated desktop and mobile sessions, inspect form state, and verify the temporary cart allocation.
- 4
Resolve
Give developers the affected URL, viewport, screenshot, failed state, and next check—then close the incident on a passing re-test.
Client-safe by design
Test the storefront contract without entering subscriber data.
PlanLatch reads
- Product titles and public URLs
- Product variants
- Selling-plan definitions
- Public storefront behavior
PlanLatch does not read or change
- Customers or orders
- Payment methods
- Subscription contracts
- Client themes
Shopify App Pricing
Choose the coverage that matches the storefront.
Each installation covers one authorized Shopify store. Both plans include a seven-day trial and use Shopify's designated billing interface.
Basic
$19/month
- Up to 25 subscription products
- One desktop and mobile check per day
- Email incident alerts
- Evidence and recent check history
- Seven-day trial
MORE COVERAGE
Pro
$39/month
- Up to 200 subscription products
- Four desktop and mobile checks per day
- Email and Slack incident alerts
- Extended incident history
- Seven-day trial
Prices are in USD. Plans are billed through Shopify App Pricing. The recurring charge begins after the seven-day trial unless the merchant changes or cancels the plan or uninstalls the app before the trial ends.
Shopify & Recharge agencies
Start with one product. Keep the evidence.
Submit one authorized public subscription product. PlanLatch checks the path from widget to temporary cart before asking you to install anything.
Request the free health check