This is the documentation for our official clients for Cocoa (Swift and Objective-C). Starting with version 3.0.0 we’ve switched our interal code from Swift to Objective-C to maximize compatiblity. Also we trimmed the public API of our sdk to a minimum. Some of the lesser used features that where present before are gone now, check out Migration Guide or Advanced Usage for details.


The SDK can be installed using CocoaPods or Carthage. This is the recommended client for both Swift and Objective-C.

We recommend installing Sentry with CocoaPods.

To integrate Sentry into your Xcode project using CocoaPods, specify it in your Podfile:

source ''
platform :ios, '8.0'

target 'YourApp' do
    pod 'Sentry', :git => '', :tag => '4.1.0'

If you want to use Sentry without KSCrash you can just remove it from the subspecs. Keep in mind that if you are not using KSCrash no events will be reported whenever you app crashes. Also some function might do nothing if they are related to KSCrash.

Afterwards run pod install. In case you encounter problems with dependencies and you are on a newer CocoaPods you might have to run pod repo update first.

To integrate Sentry into your Xcode project using Carthage, specify it in your Cartfile:

github "getsentry/sentry-cocoa" "4.1.0"

Run carthage update to download the framework and drag the built Sentry.framework into your Xcode project.

Note that for Carthage we had to bundle KSCrash into the Sentry.framework to make everything work. So you will always get KSCrash with Sentry when using Carthage.

We also provide a prebuilt version for every release which can be downloaded at releases on github.


To use the client, change your AppDelegate’s application method to instantiate the Sentry client:

import Sentry

func application(application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

    // Create a Sentry client and start crash handler
    do {
        Client.shared = try Client(dsn: "___PUBLIC_DSN___")
        try Client.shared?.startCrashHandler()
    } catch let error {
        // Wrong DSN or KSCrash not installed

    return true

If you prefer to use Objective-C you can do so like this:

@import Sentry;

NSError *error = nil;
SentryClient *client = [[SentryClient alloc] initWithDsn:@"___PUBLIC_DSN___" didFailWithError:&error];
SentryClient.sharedClient = client;
[SentryClient.sharedClient startCrashHandlerWithError:&error];
if (nil != error) {
    NSLog(@"%@", error);

Note that if you call startCrashHandler will only catch errors if KSCrash is present.

Debug Symbols

Before you can start capturing crashes you will need to tell Sentry about the debug information by uploading dSYM files. Depending on your setup this can be done in different ways:

Testing a Crash

If you would like to test the crash reporting you will need to cause a crash. While, the seemingly obvious method would be make it crash on launch, this will not give the Sentry client a chance to actually submit the crash report. Instead, we recommend triggering a crash from a button tap.

You can use the following methods to cause a crash:

  • Swift:

  • Objective-C:

    [SentryClient.sharedClient crash];

Note that if you crash with a debugger attached nothing will happen.

Crashes are only submitted upon re-launching the application. To test the crashing, close the app and launch it again from the springboard.