In-app purchases

Sell a subscription by following the checklist on Publish › Purchases: the stores, RevenueCat, the paywall, the products and a test purchase.

Updated Oct 11, 2026

Publish, Purchases: Get subscriptions working, a numbered checklist from the app on Google Play to RevenueCat, the paywall and a build with Google Play Billing, with a button on each step — Purchases lists every step a subscription needs and ticks each one it can see done.

Steps

Create the app on Google Play (Free), set up Play's payments profile, and sign Apple's Paid Apps Agreement.
Connect RevenueCat under Server › Monetization (how).
Ask the assistant for the paywall: RevenueCat, Restore purchases and the legal links.
Send an App Bundle to internal testing; Google allows subscriptions only after a Play Billing build.
On Publish › Purchases: Review, then Create subscription (pro, base plans monthly and yearly).
Make the App Store's products (below), test a purchase, and Mark done.

App Store products

On Publish › Purchases, switch to iOS and press Set up on the App Store.
Check each product's type, name, description and price, pick the screen App Review should see, and press Make on the App Store.
FluxNative makes them in App Store Connect (price, countries, review screenshot and note) and adds them to RevenueCat beside the Google Play ones. A product you started by hand only gets what it lacks.
An app's first products go to review with the app: Submit for review takes the ones the app sells along. Later ones: Send for review.

Connect RevenueCat

Create a RevenueCat project for this app only, with its App Store app (In-App Purchase key) and Play app. For the Play app, use a second service account, not the one FluxNative publishes with, invited in Play Console with View app information and download bulk reports (read-only), View financial data, orders, and cancellation survey responses, Manage orders and subscriptions and Manage store presence.
Under Product catalog, create the entitlement pro.
Under Project settings › API keys, create a V2 secret key (sk_…): Project configuration Read & write, Customer information Read.
Paste it under Server › Monetization.

Test without paying

Add Google Play testers under Settings › License testing; they are never charged. On iPhone, sign in to a Sandbox account and install from TestFlight: a month renews in about 5 minutes. In RevenueCat, turn on View sandbox data.

Good to know

Physical goods and services can't use in-app purchases: ask for Stripe (or VNPay, MoMo, ZaloPay, PayOS in Vietnam).
Uploads refuse a demo paywall that unlocks without a store; builds refuse RevenueCat's test_ key.
Apple rejects paywalls without Restore purchases, Terms and privacy links, or a clear price and period (3.1.2).
A Google product ID and its billing periods never change.

Google Play testing · Store page

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