Lock widget for pro-users

Hi,

I have added widgets to my iOS app and I would like to make this feature only accessible to "pro" users that have made a non-consumable in-app purchase.

Currently, I am doing the following:

• I store an "isUnlocked" property in the Keychain after the purchase is made

• I read data to be displayed in the widget and here I also query the Keychain and store whether the widget is unlocked

• I have no refresh policy, but only change the widget data on a significant time change

• a different view is displayed when the app is locked

Some dummy code snippets:

Code Block 
func getTimeline(in context: Context, completion: @escaping (Timeline<Entry>) -> Void) {
    let entry = readContents()
    let timeline = Timeline(entries: [entry], policy: .never)
    completion(timeline)
}

Code Block 
struct WidgetEntryView: View {
    let entry: Provider.Entry
    @Environment(\.widgetFamily) var family
    @ViewBuilder
    var body: some View {
        switch family {
        case .systemSmall:
            if !entry.isUnlocked {
                LockedWidgetView()
            } else if let event = entry.event {
                SmallWidgetEventView(event: event)
            } else {
                NoDataWidgetView()
            }
...

Code Block 
func applicationSignificantTimeChange(_ application: UIApplication) {
    if #available(iOS 14.0, *) {
        WidgetCenter.shared.reloadAllTimelines()
    }
...

However, 2 unexpected things happen:

• the view is refreshed intraday (not only at midnight i.e. at significant time change)

• sometimes the LockedWidgetView is displayed.

Especially the latter is problematic, because it gives false information to a user that has already made the in-app purchase.

How can I achieve my goal of only displaying info when the user has made the in-app purchase?

Thanks in advance.

P.S. Although it would not have my preference, I would also find it acceptable if the widget is only shown as option to add once the purchase is made. In other words, I was considering changing the Widget itself:

Code Block 
struct MyWidget: Widget {
    private var supportedFamilies: [WidgetFamily] = isUnlocked() ? [.systemSmall, .systemMedium] : []

but I believe I cannot re-initialise the widget from the app when the user makes the in-app purchase, because the only refresh option that I have is

Code Block 
WidgetCenter.shared.reloadAllTimelines()