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Firebase Tutorial: iOS A/B Testing

iOS A/B Testing is an effective way to run experiments in iOS apps. Learn how Firebase makes it easy to run experiments and review results in your iOS apps.

This is a companion discussion topic for the original entry at

Using Xcode 8 with a simulator iPhone 7 and running the provided starter application, I am running into an error that states: terminating with uncaught exception of type NSException that points to line 27: class AppDelegate: UIResponder, UIApplicationDelegate {

What can be done to address that error?

Yolo, have you gone through the steps in the “Getting Started” section, where you set up your Firebase project in the console and add the downloaded GoogleService-info.plist file to your app? That might be the cause of the problem.

This tutorial is more than six months old so questions are no longer supported at the moment for it. We will update it as soon as possible. Thank you! :]