Hi, I want to develop a referral system for my subscribers. If someone suggests my app and his/her friend buy a subscription I want to give the referrer a one-month free subscription or extend the existing subscription to one month for free. Is it possible to do this with offer codes?

Hi all, I am trying to create a widget for my app but I cannot use the Preview feature of Xcode. Xcode enters a build loop and builds the project over and over. There is no error or message. There is only a loading spinner and lots of build. It doesn't matter how much time I wait, it never finishes. I tried to clean the build folder, delete all preview simulators, quit, and reopen the XCode but nothing helped.

I am distributing my apps via the App Store and testing before release with TestFlight. Today I noticed a user registered with the TestFlight version. So I checked another user and I saw an old version of my app used to register. All those users were registered with Apple sign-in. Does Apple randomly register bot users to make automation tests? Normally Google does this when I send for approval. Immediately 3 users register with Google account and use Google Sign in. So if this is the case how can I eliminate those bot users from real ones? If it is not how can be possible a user can install the from the TestFlight? (install with link is disabled, only test users can install)

I am developing WatchOs version of my iOS (flutter) application. Everything is fine but my phone application has a membership feature and unauthenticated users can't use the app features. So I have to check if the user logged in to the phone app while opening my watch app. The problem is that I couldn't figure out what is the correct way of doing this check. Should I do it via WatchSession or is updateApplicationContext enough? Or is there any other way? The user can log out from the phone application while the watch is not reachable so when the user opens the watch app later, there can be an asynchronous situation.

Hello, in my new app, I want to distribute special offer codes for subscriptions that are active for a lifetime. in the documents, I saw a time-limited discount is possible but I want to make a discount for a lifetime who has these offer codes. is this possible?

I was using window tabs before document tabs announced to separate Interface Builder from documents to earn some time by avoiding reopening of storyboards.(I have a Late'13 MBP) So one window tab for Main.storyboard and one or more window tab(s) for text documents like swift files. And thanks to window tabs they allow me to select different pane configuration for each tab. To utilize screen usage I was closing left pane (Navigator) at Storyboard tab and closing right pane (Inspectors) at .swift tabs.  Then Xcode 12 arrived and document tabs announced. So I started to use window tabs + document tabs. Still one window tab for interface builder and one or more documents tabs for storyboards or nibs. Another window tab for text files and one or more documents tabs for .swift files or etc. Navigator and Inspector panes usage were still same. But at some point they changed a behavior of window tabs. Now pane configuration is not tab based, it is application based. So this is so frustrating for me to opening and closing panes every time when I navigate between tabs. Do you have suggestion to change this pane configuration behavior?