abdullah4ai/revenuecat

RevenueCat Integration

SDK Initialization

Configure RevenueCat in your App's init() with StoreKit 2:

import RevenueCat

@main
struct MyApp: App {
    init() {
        #if DEBUG
        Purchases.logLevel = .debug
        #endif
        Purchases.configure(
            with: Configuration.Builder(withAPIKey: AppConfig.revenueCatAPIKey)
                .with(storeKitVersion: .storeKit2)
                .build()
        )
    }
}

The API key comes from AppConfig.revenueCatAPIKey — NEVER hardcode it inline.

Fetching Offerings

let offerings = try await Purchases.shared.offerings()
if let current = offerings.current {
    for package in current.availablePackages {
        let product = package.storeProduct
        let price = product.localizedPriceString  // "$9.99" — dynamic from store
        let name = product.localizedTitle          // "Premium Monthly"
    }
}

Purchasing

let result = try await Purchases.shared.purchase(package: package)
if !result.userCancelled {
    let isPremium = result.customerInfo.entitlements[AppConfig.entitlementID]?.isActive == true
}

Handle errors:

• .purchaseCancelledError — user tapped Cancel, do nothing
• .paymentPendingError — payment pending approval (Ask to Buy)
• .storeProblemError — App Store issue, show retry
• .purchaseNotAllowedError — device restrictions

Checking Entitlements

ALWAYS use AppConfig.entitlementID — never hardcode the entitlement string:

let customerInfo = try await Purchases.shared.customerInfo()
let isPremium = customerInfo.entitlements[AppConfig.entitlementID]?.isActive == true

Reactive Updates

for try await customerInfo in Purchases.shared.customerInfoStream {
    let isPremium = customerInfo.entitlements[AppConfig.entitlementID]?.isActive == true
}

Restore Purchases

let customerInfo = try await Purchases.shared.restorePurchases()

User Account Linking

When using authentication (Supabase, Firebase, etc.), link the user ID:

let (customerInfo, _) = try await Purchases.shared.logIn(userId)

Call logIn after the user authenticates. Call logOut on sign-out:

let customerInfo = try await Purchases.shared.logOut()

CRITICAL: No Hardcoded Values

• API key: use AppConfig.revenueCatAPIKey
• Entitlement: use AppConfig.entitlementID
• Product IDs: use AppConfig.ProductID constants
• Prices: use package.storeProduct.localizedPriceString — NEVER hardcode dollar amounts

See SDK Setup, Purchase Flow, and Entitlements for detailed patterns.