Win-Back Offers Generator

Generate a complete win-back flow for recovering churned subscribers using StoreKit 2's win-back offer APIs (iOS 18+), Message API handling, and fallback promotional offers for older OS versions.

When This Skill Activates

Use this skill when the user:

• Asks to "win back" or "re-engage" churned subscribers
• Mentions "lapsed subscribers" or "subscriber recovery"
• Wants to implement "win-back offers" (iOS 18+)
• Asks about "subscription churn" reduction
• Mentions "Message API" for subscription offers
• Wants to reduce subscriber attrition

Minimum Eligibility

Win-back offers involve meaningful engineering and ASC configuration. Check these thresholds before proceeding:

| Churned Subscribers | Recommendation | |----|---| | Under 50 | Not worth the setup effort. Use personal email outreach instead — write individual messages to churned users. Focus energy on preventing churn (improve onboarding, engagement). | | 50-500 | Implement basic win-back via promotional offers (simpler than full win-back flow). Use offer codes distributed via email. | | 500+ | Full win-back implementation justified. Native iOS 18+ win-back offers, Message API handling, automated pipeline. |

If you don't know your churn numbers: Check App Store Connect > Subscriptions > Retention metrics. If your total subscriber base is under 200, you likely don't have enough churn volume to justify this skill yet.

Pre-Generation Checks

1. Project Context Detection

• ] Check for existing StoreKit implementation
• ] Check deployment target (iOS 18+ for native win-back, iOS 16+ for promotional offer fallback)
• ] Look for existing subscription management code
• ] Check if subscription-offers skill was already used
• ] Check churn volume — is the number of churned subscribers worth automating?

2. Conflict Detection

Glob: **/*WinBack*.swift, **/*Reengag*.swift
Grep: "winBackOffers" or "Message.messages" or "presentWinBackOffer"

Configuration Questions

Ask user via AskUserQuestion:

1. Win-back approach

• Native win-back offers only (iOS 18+ required)
• Promotional offer fallback (supports iOS 16+)
• Both (recommended)

1. Message handling

• Handle App Store messages in-app (recommended)
• Let system handle messages
• Custom message presentation

1. Analytics integration

• Basic (print logging)
• Custom analytics protocol
• Specific SDK (specify which)

Generation Process

Step 1: Read Templates

Read templates.md for all win-back implementation code.

Step 2: Create Core Files

1. WinBackOfferManager.swift — Win-back offer detection, eligibility, and presentation
2. WinBackMessageHandler.swift — StoreKit Message API integration for in-app offer display
3. WinBackEligibility.swift — Churn detection and eligibility logic
4. WinBackOfferView.swift — Custom win-back offer presentation UI

Step 3: Create Optional Files

1. WinBackAnalytics.swift — Track win-back funnel metrics
2. WinBackFallback.swift — Promotional offer fallback for iOS < 18

Step 4: Determine File Location

- If Sources/Store/ exists → Sources/Store/WinBack/
- If Store/ exists → Store/WinBack/
- Otherwise → WinBack/

Output Format

Files Created

Store/WinBack/
├── WinBackOfferManager.swift      # Core win-back logic
├── WinBackMessageHandler.swift    # Message API handling
├── WinBackEligibility.swift       # Churn detection
├── WinBackOfferView.swift         # Custom offer UI
├── WinBackAnalytics.swift         # Funnel tracking (optional)
└── WinBackFallback.swift          # iOS < 18 fallback (optional)

Integration Steps

App Entry Point — Message Handling:

swift
@main
struct MyApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
                .storeMessagesTask { message in
                    // Handle win-back messages from App Store
                    await WinBackMessageHandler.shared.handle(message)
                }
        }
    }
}

Check Win-Back Eligibility:

swift
let manager = WinBackOfferManager()
let winBackOffer = await manager.checkWinBackAvailability(
    productID: "com.app.subscription.monthly"
)

if let offer = winBackOffer {
    // Show win-back UI
    showWinBackSheet(offer: offer)
}

Present Win-Back Offer:

swift
// Native (iOS 18+) — raw StoreKit path
if case .verified(let renewalInfo) = status.renewalInfo,
   let bestID = renewalInfo.eligibleWinBackOfferIDs.first,   // first ID = best offer
   let offer = product.subscription?.winBackOffers.first(where: { $0.id == bestID }) {
    let result = try await product.purchase(options: [.winBackOffer(offer)])
}

// With StoreKit views, choose the merchandised offer instead
SubscriptionStoreView(groupID: groupID)
    .preferredSubscriptionOffer { product, subscription, offers in
        offers.first { $0.type == .winBack }
    }

Hide win-back merchandising from anyone still entitled with auto-renew on — the offer is for lapsed subscribers only.

Where Offers Surface (WWDC24)

The App Store does the distribution — eligible lapsed subscribers see your win-back offer on:

• Your product page (offer card)
• Today / Games / Apps editorial placements
• The App Store's Subscriptions management page
• In-app, via the APIs above

Streamlined purchasing is ON by default: users can redeem on the App Store before ever reopening your app, so the transaction arrives via Transaction.updates — listen from launch. If you disable streamlined purchasing, implement PurchaseIntent to complete the purchase in-app.

Testing Instructions

1. Sandbox Account: Create a subscriber, cancel, wait for expiry — and enable "Display Win-back Offers" in the sandbox account settings
2. StoreKit Testing: Use Transaction Manager to simulate churn; the Xcode StoreKit configuration file has per-offer eligibility toggles to simulate any eligibility state
3. Message Testing: Test App Store message presentation
4. Verify flow: Churned → Offer shown → Purchase → Active subscriber

App Store Connect Setup

1. Go to Subscriptions > Your Group > Win-Back Offers
2. Create offer with pricing and duration
3. Set the three declarative eligibility knobs (WWDC24):

• Minimum paid subscription months — most recent consecutive paid months; any subscription in the group counts, and upgrades/downgrades don't reset the count
• Time since last subscribed — both a minimum AND a maximum, in months
• Redemption cooldown (optional) — wait between redemptions, starting after the offer period ends
• Worked example: paid ≥ 3 months, lapsed 2–24 months, 6-month cooldown, offer = 1 month free

1. Configure offer priority if multiple offers exist — it decides which offer is "best" when several are eligible

Config gotchas:

• Offer identifier and pricing are immutable after creation
• Eligibility criteria lock at the offer's start date
• Stopping App Store promotion requires deleting the offer

Retention Messaging (At-Cancel Save Offers)

> The App Store Connect tier is open to all developers (WWDC26); the real-time server API is gated behind an access-request form + a mandatory sandbox performance test. (Per the session "Explore Retention Messaging in App Store Connect".)

The App Store presents your message on the cancel confirmation page — the last screen before a subscriber churns. It complements win-back rather than replacing it:

| Mechanism | Fires | |-----------|-------| | Retention messaging | At cancel — before the user churns | | Win-back offer | After lapse — once the subscription has expired |

Configure both — they cover opposite ends of the churn window.

Mechanics (from Apple's session):

• Three formats: message only · message + image (from the Asset Library) · message + retention offer.
• Attach multiple offers to one subscription with confidence — "the App Store will automatically choose the best offer for eligible customers."
• Setup (no server needed): ASC → Subscriptions → Retention Messaging → name it, write the message, optionally attach image + offers, pick subscriptions, test in sandbox first. Also configurable via the ASC API.
• Real-time variant: the App Store calls your endpoint for a per-customer message, falling back automatically (your ASC messages → API defaults → system fallback) if it times out — so always configure the ASC tier even when using real-time.
• Apple's observed impact: average save-rate lift +1.4 points (~82%); messages carrying a promotional offer reached +5.5 points (~223%) — with "varying results across developers." (Save rate = % of subscribers who keep the subscription after reaching the cancel confirmation page.)

References

• templates.md — All production Swift templates
• Related: generators/subscription-offers — All offer types including win-back
• Related: generators/paywall-generator — Full paywall implementation
• Related: app-store/marketing-strategy — Win-back campaign planning