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# Google Sign-In for iOS

Get users into your apps quickly and securely, using a registration system they
already use and trust—their Google account.

Visit [our developer site](https://developers.google.com/identity/sign-in/ios/)
for integration instructions, documentation, support information, and terms of
service.

## Getting Started

Try either the [Objective-C](Samples/ObjC) or [Swift](Samples/Swift) sample app.
For example, to demo the Objective-C sample project, you have three options:

1. Using [CocoaPods](https://cocoapods.org/)'s `try` method:

```
pod try GoogleSignIn
```

Note, this will default to providing you with the Objective-C sample app.

2. Using CocoaPod's `install` method:

```
git clone https://github.com/google/GoogleSignIn-iOS
cd GoogleSignIn-iOS/Samples/ObjC/SignInSample/
pod install
open SignInSampleForPod.xcworkspace
```

3. Using [Swift Package Manager](https://swift.org/package-manager/):

```
git clone https://github.com/google/GoogleSignIn-iOS
open GoogleSignIn-iOS/Samples/ObjC/SignInSample/SignInSample.xcodeproj
```

If you would like to see a Swift example, take a look at 
[Samples/Swift/DaysUntilBirthday](Samples/Swift/DaysUntilBirthday).

* Add Google Sign-In to your own app by following our
[getting started guides](https://developers.google.com/identity/sign-in/ios/start-integrating).
* Take a look at the
[API reference](https://developers.google.com/identity/sign-in/ios/api/).

## Mac Catalyst

Google Sign-In supports apps built for [Mac Catalyst](https://developer.apple.com/mac-catalyst/).  In order for
your Mac Catalyst app to access the keychain on macOS you will need to enable the Keychain Sharing capability.  No
keychain groups need to be added.