If you still need to implement the IMA SDK in your app, check out our Get Started guide.
Add companion ads to your app
Create a UIView for your companion
Before requesting a companion, you need to create a space for it in your layout. In your storyboard, drag and drop a View onto your ViewController and size it to your companion ad. Then, make sure your companion slot is tied to a variable in your implementation (this example uses a variable called companionView). In the screenshot below, the light gray view is the companion ad view:
Create an IMACompanionAdSlot
The next step is to build an IMACompanionAdSlot object from your view. The IMA SDK
populates the companion ad slot with any companions from the VAST response that have dimensions
matching the view's height and width. The IMA SDK also supports using
fluid sized companions.
Lastly, you need to let the SDK know that this companion slot exists by passing an array of your companion slots to the IMAAdDisplayContainer constructor:
That's all there is to it! Your application is now displaying companion ads.
Display fluid companion ads
IMA now supports fluid companion ads. These companions ads can resize to match the size of
the ad slot. They fill 100% of the width of parent view, then resize their height to fit the
companion's content. They're set by using the Fluid companion size in Ad Manager.
See the following image for where to set this value.
Update iOS apps for fluid companions
You can declare a fluid companion slot by initiating the
IMACompanionAdSlot
with only the view parameter; excluding width and
height.
I followed the guide, but I'm not seeing companion ads. What should I do?
First, check to make sure your tag really is returning companions. To do this, open the tag in a web browser and look for a CompanionAds tag. If you see that, check to make sure the size of the companion being returned is the same size as the UIView in which you're trying to display it.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis guide helps iOS publishers integrate companion ads using the IMA SDK.\u003c/p\u003e\n"],["\u003cp\u003eYou need an iOS app with the IMA SDK and an ad tag returning companion ads to get started.\u003c/p\u003e\n"],["\u003cp\u003eCreate a UIView for the companion ad and an IMACompanionAdSlot tied to it.\u003c/p\u003e\n"],["\u003cp\u003eInform the SDK about the companion slot by passing it to the IMAAdDisplayContainer.\u003c/p\u003e\n"],["\u003cp\u003eFluid companion ads can be implemented for automatic resizing to fit content.\u003c/p\u003e\n"]]],[],null,["Select platform: [HTML5](/interactive-media-ads/docs/sdks/html5/client-side/companions \"View this page for the HTML5 platform docs.\") [Android](/interactive-media-ads/docs/sdks/android/client-side/companions \"View this page for the Android platform docs.\") [iOS](/interactive-media-ads/docs/sdks/ios/client-side/companions \"View this page for the iOS platform docs.\")\n\nThis guide is intended for publishers interested in adding companion ads to their iOS IMA implementation.\n\nPrerequisites\n\n- iOS Application with the IMA SDK integrated.\n- An ad tag configured to return a companion ad.\n - If you need a sample, check out our [FAQ](/interactive-media-ads/docs/sdks/ios/client-side/faq#4).\n\nHelpful primers\n\nIf you still need to implement the IMA SDK in your app, check out our [Get Started guide](/interactive-media-ads/docs/sdks/ios/client-side).\n\nAdd companion ads to your app\n\nCreate a UIView for your companion\n\nBefore requesting a companion, you need to create a space for it in your layout. In your storyboard, drag and drop a View onto your `ViewController` and size it to your companion ad. Then, make sure your companion slot is tied to a variable in your implementation (this example uses a variable called companionView). In the screenshot below, the light gray view is the companion ad view:\n\nCreate an IMACompanionAdSlot\n\nThe next step is to build an IMACompanionAdSlot object from your view. The IMA SDK\npopulates the companion ad slot with any companions from the VAST response that have dimensions\nmatching the view's height and width. The IMA SDK also supports using\n[fluid sized companions](/interactive-media-ads/docs/sdks/ios/client-side/companions#display-fluid-companion-ads).\n**ViewController.h** \n\n```transact-sql\n@property(nonatomic, weak) IBOutlet UIView *companionView;\n```\n**ViewController.m** \n\n```objective-c\nself.companionSlot =\n [[IMACompanionAdSlot alloc] initWithView:self.companionView\n width:self.companionView.frame.size.width\n height:self.companionView.frame.size.height];\n```\n\nPass the companion ad slot to your ad container\n\nLastly, you need to let the SDK know that this companion slot exists by passing an array of your companion slots to the `IMAAdDisplayContainer` constructor:\n**ViewController.m** \n\n```objective-c\nreturn [[IMAAdDisplayContainer alloc] initWithAdContainer:self.videoView\n viewController:self\n companionSlots:@[ self.companionSlot ]];\n```\n\nThat's all there is to it! Your application is now displaying companion ads.\n\nDisplay fluid companion ads\n\nIMA now supports fluid companion ads. These companions ads can resize to match the size of\nthe ad slot. They fill 100% of the width of parent view, then resize their height to fit the\ncompanion's content. They're set by using the `Fluid` companion size in Ad Manager.\nSee the following image for where to set this value.\n\nUpdate iOS apps for fluid companions\n\nYou can declare a fluid companion slot by initiating the\n[`IMACompanionAdSlot`](/interactive-media-ads/docs/sdks/ios/client-side/reference/Classes/IMACompanionAdSlot#-initwithview:)\nwith only the `view` parameter; excluding `width` and\n`height`.\n**ViewController.m** \n\n```objective-c\nself.companionSlot =\n [[IMACompanionAdSlot alloc] initWithView:self.companionView];\n```\n\nFAQ\n\nI followed the guide, but I'm not seeing companion ads. What should I do?\n: First, check to make sure your tag really is returning companions. To do this, open the tag in a web browser and look for a CompanionAds tag. If you see that, check to make sure the size of the companion being returned is the same size as the UIView in which you're trying to display it."]]