Fixed-scope mobile billing review

Make the purchase path real before launch.

Send one public repository or a redacted build description. I will trace one paywall from button to entitlement, then return a patch or a short report with evidence.

US$49 one app, one purchase path
Request scope confirmation Use the GitHub request form App Store preflight See shipped apps

Confirm scope and delivery time first. Payment by bank transfer or Alipay; no Apple ID, password, private key, or production credential is needed for the first pass.

What I check

Native purchase path

Library compatibility, initialization timing, product lookup, purchase, cancellation, and failures.

Real storefront prices

Paywall labels come from StoreKit or RevenueCat products, with a safe fallback only when the store is unavailable.

Entitlements and restore

Restore Purchases, account identity, subscription state, and the path from transaction to premium access.

Launch evidence

iOS capability, Android billing permission, build requirements, and a focused sandbox/TestFlight test matrix.

Delivery

  1. Send a public repo, branch, or redacted implementation notes.
  2. I confirm scope, delivery time, and payment details.
  3. After payment is confirmed, I run the agreed review and prepare a patch or Markdown report.
  4. You receive the result and one round of questions within scope.

Boundary

This covers one app and one purchase path. It does not include accepting store agreements, submitting builds, handling private credentials, or promising approval or revenue. Any code change is returned for the owner to review and merge.

Have a paywall that is not ready to ship?

Send the public branch and the product identifiers. I will confirm the exact scope before payment.

Request a review →