<div markdown="1"> <sup>Using <a href="https://wangchujiang.com/#/app" target="_blank">my apps</a> is also a way to <a href="https://wangchujiang.com/#/sponsor" target="_blank">support</a> me:</sup> <br> <a target="_blank" href="https://apps.apple.com/app/6758053530" title="Scap: Screenshot & Markup Edit for macOS"><img alt="Scap: Screenshot & Markup Edit" height="52" width="52" src="https://wangchujiang.com/appicon/scap.png"></a> <a target="_blank" href="https://apps.apple.com/app/6757317079" title="Screen Test for macOS"><img alt="Screen Test" height="52" width="52" src="https://wangchujiang.com/appicon/screen-test.png"></a> <a target="_blank" href="https://apps.apple.com/app/Deskmark/6755948110" title="Deskmark for macOS"><img alt="Deskmark" height="52" width="52" src="https://wangchujiang.com/appicon/deskmark.png"></a> <a target="_blank" href="https://apps.apple.com/app/Keyzer/6500434773" title="Keyzer for macOS"><img alt="Keyzer" height="52" width="52" src="https://wangchujiang.com/appicon/keyzer.png"></a> <a target="_blank" href="https://github.com/jaywcjlove/vidwall-hub" title="Vidwall Hub for macOS"><img alt="Vidwall Hub" height="52" width="52" src="https://wangchujiang.com/appicon/vidwall-hub.png"></a> <a target="_blank" href="https://apps.apple.com/app/VidCrop/6752624705" title="VidCrop for macOS"><img alt="VidCrop" height="52" width="52" src="https://wangchujiang.com/appicon/vidcrop.png"></a> <a target="_blank" href="https://apps.apple.com/app/Vidwall/6747587746" title="Vidwall for macOS"><img alt="Vidwall" height="52" width="52" src="https://wangchujiang.com/appicon/vidwall.png"></a> <a target="_blank" href="https://wangchujiang.com/mousio-hint/" title="Mousio Hint for macOS"><img alt="Mousio Hint" height="52" width="52" src="https://wangchujiang.com/appicon/mousio-hint.png"></a> <a target="_blank" href="https://apps.apple.com/app/6746747327" title="Mousio for macOS"><img alt="Mousio" height="52" width="52" src="https://wangchujiang.com/appicon/mousio.png"></a> <a target="_blank" href="https://apps.apple.com/app/6745227444" title="Musicer for macOS"><img alt="Musicer" height="52" width="52" src="https://wangchujiang.com/appicon/musicer.png"></a> <a target="_blank" href="https://apps.apple.com/app/6743841447" title="Audioer for macOS"><img alt="Audioer" height="52" width="52" src="https://wangchujiang.com/appicon/audioer.png"></a> <a target="_blank" href="https://apps.apple.com/app/6744690194" title="FileSentinel for macOS"><img alt="FileSentinel" height="52" width="52" src="https://wangchujiang.com/appicon/file-sentinel.png"></a> <a target="_blank" href="https://apps.apple.com/app/6743495172" title="FocusCursor for macOS"><img alt="FocusCursor" height="52" width="52" src="https://wangchujiang.com/appicon/focus-cursor.png"></a> <a target="_blank" href="https://apps.apple.com/app/6742680573" title="Videoer for macOS"><img alt="Videoer" height="52" width="52" src="https://wangchujiang.com/appicon/videoer.png"></a> <a target="_blank" href="https://apps.apple.com/app/6740425504" title="KeyClicker for macOS"><img alt="KeyClicker" height="52" width="52" src="https://wangchujiang.com/appicon/key-clicker.png"></a> <a target="_blank" href="https://apps.apple.com/app/6739052447" title="DayBar for macOS"><img alt="DayBar" height="52" width="52" src="https://wangchujiang.com/appicon/daybar.png"></a> <a target="_blank" href="https://apps.apple.com/app/6739444407" title="Iconed for macOS"><img alt="Iconed" height="52" width="52" src="https://wangchujiang.com/appicon/iconed.png"></a> <a target="_blank" href="https://apps.apple.com/app/6737160756" title="Menuist for macOS"><img alt="Menuist" height="52" width="52" src="https://wangchujiang.com/appicon/rightmenu-master.png"></a> <a target="_blank" href="https://apps.apple.com/app/6723903021" title="Paste Quick for macOS"><img alt="Quick RSS" height="52" width="52" src="https://wangchujiang.com/appicon/paste-quick.png"></a> <a target="_blank" href="https://apps.apple.com/app/6670696072?platform=mac" title="Quick RSS for macOS/iOS"><img alt="Quick RSS" height="52" width="52" src="https://wangchujiang.com/appicon/quick-rss.png"></a> <a target="_blank" href="https://apps.apple.com/app/6670167443" title="Web Serve for macOS"><img alt="Web Serve" height="52" width="52" src="https://wangchujiang.com/appicon/web-serve.png"></a> <a target="_blank" href="https://apps.apple.com/app/6503953628?platform=mac" title="Copybook Generator for macOS/iOS"><img alt="Copybook Generator" height="52" width="52" src="https://wangchujiang.com/appicon/copybook-generator.png"></a> <a target="_blank" href="https://apps.apple.com/app/6471227008?platform=mac" title="DevTutor for macOS/iOS"><img alt="DevTutor for SwiftUI" height="52" width="52" src="https://wangchujiang.com/appicon/devtutor.png"></a> <a target="_blank" href="https://apps.apple.com/app/6479819388?platform=mac" title="RegexMate for macOS/iOS"><img alt="RegexMate" height="52" width="52" src="https://wangchujiang.com/appicon/regex-mate.png"></a> <a target="_blank" href="https://apps.apple.com/app/6479194014?platform=mac" title="Time Passage for macOS/iOS"><img alt="Time Passage" height="52" width="52" src="https://wangchujiang.com/appicon/time-passage.png"></a> <a target="_blank" href="https://apps.apple.com/app/6478772538" title="IconizeFolder for macOS"><img alt="Iconize Folder" height="52" width="52" src="https://wangchujiang.com/appicon/iconize-folder.png"></a> <a target="_blank" href="https://apps.apple.com/app/6478511402?platform=mac" title="Textsound Saver for macOS/iOS"><img alt="Textsound Saver" height="52" width="52" src="https://wangchujiang.com/appicon/textsound-saver.png"></a> <a target="_blank" href="https://apps.apple.com/app/6476924627" title="Create Custom Symbols for macOS"><img alt="Create Custom Symbols" height="52" width="52" src="https://wangchujiang.com/appicon/create-custom-symbols.png"></a> <a target="_blank" href="https://apps.apple.com/app/6476452351" title="DevHub for macOS"><img alt="DevHub" height="52" width="52" src="https://wangchujiang.com/appicon/devhub.png"></a> <a target="_blank" href="https://apps.apple.com/app/6476400184" title="Resume Revise for macOS"><img alt="Resume Revise" height="52" width="52" src="https://wangchujiang.com/appicon/resume-revise.png"></a> <a target="_blank" href="https://apps.apple.com/app/6472593276" title="Palette Genius for macOS"><img alt="Palette Genius" height="52" width="52" src="https://wangchujiang.com/appicon/palette-genius.png"></a> <a target="_blank" href="https://apps.apple.com/app/6470879005" title="Symbol Scribe for macOS"><img alt="Symbol Scribe" height="52" width="52" src="https://wangchujiang.com/appicon/symbol-scribe.png"></a> </div> <hr>

StoreKit Helper

中文

A lightweight StoreKit2 wrapper designed specifically for SwiftUI, making in-app purchases implementation simpler and more intuitive.

StoreKit Helper

Documentation

Please refer to the detailed StoreKitHelper documentation in DevTutor, which includes multiple quick start examples, custom payment interface examples, and API references, providing comprehensive examples and guidance.

Features

🚀 SwiftUI Native: Designed specifically for SwiftUI with @ObservableObject and @EnvironmentObject support
💡 Simple API: Clean and intuitive interface for managing in-app purchases
🔄 Automatic Updates: Real-time transaction monitoring and status updates
✅ Type Safe: Protocol-based product definitions with compile-time safety
🧪 Testable: Fully testable architecture with comprehensive test case coverage ExampleTests.swift/StoreKitHelperTests.swift

Usage

Create and inject a StoreContext instance at your SwiftUI app's entry point, which is responsible for loading the product list and tracking purchase status.

import StoreKitHelper

enum AppProduct: String, InAppProduct {
    case lifetime = "focuscursor.lifetime"
    case monthly = "focuscursor.monthly"
    var id: String { rawValue }
}

@main struct DevTutorApp: App {
    @StateObject var store = StoreContext(products: AppProduct.allCases)
    var body: some Scene {
        WindowGroup {
            ContentView().environmentObject(store)
        }
    }
}

StoreContext exposes a tri-state purchase status. At app launch, purchaseStatus starts as .loading until Transaction.currentEntitlements finishes its first sync. During this stage, hasPurchased and hasNotPurchased both return false, so startup code will not accidentally treat the user as "not purchased".

switch store.purchaseStatus {
case .loading:
    // Purchase state is still being resolved
case .purchased:
    // ✅ User has active purchases
case .notPurchased:
    // 🧾 User has no active purchases
}

Recommended usage:

@EnvironmentObject var store: StoreContext

var body: some View {
    switch store.purchaseStatus {
    case .loading:
        ProgressView("Checking purchases...")
    case .purchased:
        // ✅ User has purchased - show full functionality
    case .notPurchased:
        // 🧾 User hasn't purchased - show limited content or purchase prompt
    }
}

The default purchase call remains unchanged:

await store.purchase(product)

If you need StoreKit purchase options, you can now pass them through directly:

await store.purchase(product, options: [
    .appAccountToken(appAccountToken)
])

Compatible legacy usage:

@EnvironmentObject var store: StoreContext

var body: some View {
    if store.has

StoreKitHelper

Install / Use

README

StoreKit Helper

Documentation

Features

Usage