MSP SDK — iOS Integration Guide

Overview

This guide covers how to add the MSP iOS SDK to your app, including how to initialize SDK, load Ad and display ads.

The guide also provides some best pratices which helps you avoid common pitfalls and achieve best performance.

System requirements

Requirement	Version
iOS deployment target	15.0+
Xcode	15.0+
Swift	5.0+
CocoaPods	1.12+

---

Installation

The MSP SDK is distributed via CocoaPods. Add the core pod and any adapter pods for the ad networks you want to monetize with.

Podfile

platform :ios, '15.0'

target 'YourApp' do
  use_frameworks!

  # Core SDK (required)
  pod 'MSPCore', '{LATEST_VERSION}', :modular_headers => true

  # Ad network adapters (add only those you need)
  pod 'MSPGoogleAdapter', '{LATEST_VERSION}', :modular_headers => true
  pod 'MSPFacebookAdapter', '{LATEST_VERSION}', :modular_headers => true
  pod 'MSPNovaAdapter', '{LATEST_VERSION}', :modular_headers => true
  pod 'MSPMolocoAdapter', '{LATEST_VERSION}', :modular_headers => true
  pod 'MSPApplovinMaxAdapter', '{LATEST_VERSION}', :modular_headers => true
end

Run the install command:

pod install

Open the generated .xcworkspace file — do not use the .xcodeproj directly.

---

Info.plist Configuration

App Tracking Transparency (iOS 14+)

Add the usage description key. The system displays this string in the ATT permission prompt:

<key>NSUserTrackingUsageDescription</key>
<string>This identifier will be used to deliver personalized ads to you.</string>

Network-specific Info.plist entries (GAD identifier, SKAdNetwork IDs) are covered per-network in the Mediation Networks Guide.

---

Initialize the SDK

Initialize the MSP SDK as early as possible — ideally in application(_:didFinishLaunchingWithOptions:). The SDK uses the initialization window to prefetch ad configurations and warm up adapter networks.

AppDelegate.swift

import AppTrackingTransparency
import MSPCore
import MSPiOSCore

// Import adapter modules — see Mediation Networks Guide for each network's import name

@main
class AppDelegate: UIResponder, UIApplicationDelegate {
    var window: UIWindow?

    // Declare adapter managers for the networks you want to activate
    private let adNetworkManagers: [AdNetworkManager] = [
        GoogleManager(),
        FacebookManager(),
        NovaManager(),
        MolocoManager(),
        ApplovinMaxManager(),
    ]

    func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
    ) -> Bool {
        initializeMSP()

        // Request ATT permission after a brief delay so your UI is visible
        DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
            if #available(iOS 14, *) {
                ATTrackingManager.requestTrackingAuthorization { _ in }
            }
        }

        return true
    }

    private func initializeMSP() {
        // Optional: pass a publisher-provided user identifier for frequency capping
        MSP.shared.ppid = "your-user-id"

        // Build initialization parameters
        let initParams = InitializationParametersImp(
            prebidAPIKey: "YOUR_PREBID_API_KEY",
            sourceApp: "YOUR_SOURCE_APP",
            orgId: 12345,   // Your org ID from the MSP dashboard
            appId: 67890    // Your app ID from the MSP dashboard
        )

        // Additional network-specific init parameters
        initParams.params = [
            InitializationParametersCustomKeys.MOLOCO_APP_KEY: "xxxxx-v9C8uNYV5riG7Vwu",
            InitializationParametersCustomKeys.APPLOVIN_SDK_KEY: "6KrA5SQHFTBpGDUU4FeLIZG...",
        ]

        // Initialize
        MSP.shared.initMSP(
            initParams: initParams,
            sdkInitListener: self,          // optional — set to nil if not needed
            adNetworkManagers: adNetworkManagers
        )
    }
}

// MARK: - MSPInitListener (optional)
extension AppDelegate: MSPInitListener {
    func onComplete(status: MSPInitStatus, message: String) {
        print("[MSP] Initialization complete. Status: \(status), message: \(message)")
    }
}

Key initialization parameters

Parameter	Type	Description
prebidAPIKey	String	API key issued by Particle inc. for your app
sourceApp	String	App bundle identifier or source tag
orgId	Int64	Organization ID provisioned from Particle inc.
appId	Int64	App ID provisioned from Particle inc.
params	[String: Any]?	Additional network-specific initialization parameters

Optional MSP.shared properties

Property	Default	Description
ppid	nil	Publisher-provided user ID

---

Load and Display Ads

The pattern for every ad format is the same:

1. Create an MSPAdLoader and an AdRequest.
2. Call loadAd(placementId:adListener:adRequest:).
3. In onAdLoaded, call loader.getAd(placementId:) to retrieve the ad object.
4. Present the Ad(for interstitial Ad) or attach the ad to the App view hierarchy.

---

Call NotifyLoss API

Call MSP.shared.notifyLoss API when:

1. MSP Ad loses the auction, or
2. MSP SDK does not fill while other bidder wins

public func notifyLoss(winnerBidderName: String, winnerPrice: Float, ad: MSPAd?, requestId: String?)

• winnerBidderName: name of the winning bidder other than MSP
• winnderPrice: Ad price of the winning bid other than MSP
• ad: MSP Ad that loses the auction.(pass nil for the No fill case)
• requestId: Provided by onAdLoaded and onError callback parameter loadInfo[MSPConstants.LOAD_INFO_KEY_REQUEST_ID] of loadAd API

---

Ad Formats

Banner Ads

import MSPCore
import MSPiOSCore

class BannerViewController: UIViewController {

    private let loader = MSPAdLoader()
    private var bannerContainerView: UIView?

    private func loadBanner() {
        let size = AdSize(width: 320, height: 50)
        let request = AdRequest(
            customParams: [:],
            geo: nil,
            context: nil,
            adaptiveBannerSize: nil,
            adSize: size,
            placementId: "YOUR_BANNER_PLACEMENT_ID",
            adFormat: .banner
        )
        loader.loadAd(placementId: "YOUR_BANNER_PLACEMENT_ID", adListener: self, adRequest: request)
    }
}

extension BannerViewController: AdListener {

    func onAdLoaded(placementId: String, loadInfo: [String: Any]) {
        guard let bannerAd = loader.getAd(placementId: placementId) as? BannerAd else { return }

        let adView = bannerAd.adView
        adView.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(adView)

        NSLayoutConstraint.activate([
            adView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            adView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
            adView.widthAnchor.constraint(equalToConstant: 320),
            adView.heightAnchor.constraint(equalToConstant: 50),
        ])
    }

    func onError(msg: String, loadInfo: [String: Any]) {
        print("[MSP] Banner error: \(msg)")
    }

    func onAdImpression(ad: MSPAd) {}
    func onAdClick(ad: MSPAd) {}
    func onAdDismissed(ad: MSPAd) {}

    func getRootViewController() -> UIViewController? { self }
}

Standard banner sizes

Size	Width	Height
Banner	320	50
Medium rectangle	300	250
Leaderboard	728	90

Interstitial Ads

Load the interstitial before you need to show it. Display it at a natural transition point — level completion, article end, etc.

import MSPCore
import MSPiOSCore

class InterstitialViewController: UIViewController {

    private let loader = MSPAdLoader()

    private func loadInterstitial() {
        let request = AdRequest(
            customParams: [:],
            geo: nil,
            context: nil,
            adaptiveBannerSize: nil,
            adSize: nil,
            placementId: "YOUR_INTERSTITIAL_PLACEMENT_ID",
            adFormat: .interstitial
        )
        loader.loadAd(placementId: "YOUR_INTERSTITIAL_PLACEMENT_ID", adListener: self, adRequest: request)
    }

    private func showInterstitialIfReady() {
        guard let interstitialAd = loader.getAd(placementId: "YOUR_INTERSTITIAL_PLACEMENT_ID") as? InterstitialAd else {
            loadInterstitial() // not ready yet — start loading
            return
        }
        interstitialAd.show(rootViewController: self)
    }
}

extension InterstitialViewController: AdListener {

    func onAdLoaded(placementId: String, loadInfo: [String: Any]) {
        print("[MSP] Interstitial ready")
        showInterstitialIfReady()
    }

    func onError(msg: String, loadInfo: [String: Any]) {
        print("[MSP] Interstitial error: \(msg)")
    }

    func onAdDismissed(ad: MSPAd) {
        print("[MSP] Interstitial Ads is dismissed: \(msg)")
    }

    func onAdImpression(ad: MSPAd) {}
    func onAdClick(ad: MSPAd) {}

    func getRootViewController() -> UIViewController? { self }
}

Rewarded Ads

Rewarded ads are full-screen placements that grant a reward — coins, lives, premium content access — after the user completes the ad experience. The reward is delivered via onAdRewardReceived.

import MSPCore
import MSPiOSCore

class RewardedViewController: UIViewController {

    private let loader = MSPAdLoader()

    private func loadRewardedAd() {
        let request = AdRequest(
            customParams: [:],
            geo: nil,
            context: nil,
            adaptiveBannerSize: nil,
            adSize: nil,
            placementId: "YOUR_REWARDED_PLACEMENT_ID",
            adFormat: .rewarded
        )
        loader.loadAd(placementId: "YOUR_REWARDED_PLACEMENT_ID", adListener: self, adRequest: request)
    }

    @IBAction func userTappedWatchAd(_ sender: UIButton) {
        guard let rewardedAd = loader.getAd(placementId: "YOUR_REWARDED_PLACEMENT_ID") as? RewardedAd else {
            print("[MSP] Rewarded ad not ready yet")
            return
        }
        rewardedAd.show(rootViewController: self)
    }
}

extension RewardedViewController: AdListener {

    // Override this to grant the reward to the user
    func onAdRewardReceived(ad: MSPAd) {
        guard let rewardedAd = ad as? RewardedAd else { return }
        let reward = rewardedAd.reward
        print("[MSP] Reward: \(reward.amount) \(reward.type)")
        // Grant the reward to the user here
    }

    func onAdLoaded(placementId: String, loadInfo: [String: Any]) {}
    func onError(msg: String, loadInfo: [String: Any]) {}
    func onAdDismissed(ad: MSPAd) {}
    func onAdImpression(ad: MSPAd) {}
    func onAdClick(ad: MSPAd) {}

    func getRootViewController() -> UIViewController? { self }
}

Native Ads

Native ads return a NativeAd object you render with your own layout. Implement MSPNativeAdContainer to wire up your UI elements, then pass it to NativeAdView.

import MSPCore
import MSPiOSCore

class NativeViewController: UIViewController {

    private let loader = MSPAdLoader()

    private func loadNativeAd() {
        let request = AdRequest(
            customParams: [:],
            geo: nil,
            context: nil,
            adaptiveBannerSize: nil,
            adSize: nil,
            placementId: "YOUR_NATIVE_PLACEMENT_ID",
            adFormat: .native
        )
        loader.loadAd(placementId: "YOUR_NATIVE_PLACEMENT_ID", adListener: self, adRequest: request)
    }
}

extension NativeViewController: AdListener {

    func onAdLoaded(placementId: String, loadInfo: [String: Any]) {
        guard let nativeAd = loader.getAd(placementId: placementId) as? NativeAd else { return }
        DispatchQueue.main.async {
            let container = MyNativeAdContainer(frame: CGRect(x: 0, y: 0, width: 300, height: 250))
            let nativeAdView = NativeAdView(nativeAd: nativeAd, nativeAdContainer: container)
            nativeAdView.translatesAutoresizingMaskIntoConstraints = false
            self.view.addSubview(nativeAdView)
            NSLayoutConstraint.activate([
                nativeAdView.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
                nativeAdView.centerYAnchor.constraint(equalTo: self.view.centerYAnchor),
                nativeAdView.widthAnchor.constraint(equalToConstant: 300),
            ])
        }
    }

    func onError(msg: String, loadInfo: [String: Any]) {}
    func onAdImpression(ad: MSPAd) {}
    func onAdClick(ad: MSPAd) {}
    func onAdDismissed(ad: MSPAd) {}

    func getRootViewController() -> UIViewController? { self }
}

Implement MSPNativeAdContainer to provide the UI elements the SDK will populate:

class MyNativeAdContainer: UIView, MSPNativeAdContainer {
    private let titleLabel = UILabel()
    private let bodyLabel = UILabel()
    private let advertiserLabel = UILabel()
    private let ctaButton = UIButton()
    private let mediaView = UIView()
    private let iconView = UIImageView()

    func getTitle() -> UILabel? { titleLabel }
    func getbody() -> UILabel? { bodyLabel }
    func getAdvertiser() -> UILabel? { advertiserLabel }
    func getCallToAction() -> UIButton? { ctaButton }
    func getMedia() -> UIView? { mediaView }
    func getIcon() -> UIImageView? { iconView }
    func getCustomClickableViews() -> [UIView]? { nil }
}

Native-Banner Multi-format

.multi_format allows both native and banner ads to fill the same placement. In onAdLoaded, check which type was returned and render accordingly.

import MSPCore
import MSPiOSCore

class MultiFormatViewController: UIViewController {

    private let loader = MSPAdLoader()

    private func loadAd() {
        let request = AdRequest(
            customParams: [:],
            geo: nil,
            context: nil,
            adaptiveBannerSize: nil,
            adSize: nil,
            placementId: "YOUR_MULTI_FORMAT_PLACEMENT_ID",
            adFormat: .multi_format
        )
        loader.loadAd(placementId: "YOUR_MULTI_FORMAT_PLACEMENT_ID", adListener: self, adRequest: request)
    }
}

extension MultiFormatViewController: AdListener {

    func onAdLoaded(placementId: String, loadInfo: [String: Any]) {
        let ad = loader.getAd(placementId: placementId)
        DispatchQueue.main.async {
            if let nativeAd = ad as? NativeAd {
                let container = MyNativeAdContainer(frame: CGRect(x: 0, y: 0, width: 300, height: 250))
                let nativeAdView = NativeAdView(nativeAd: nativeAd, nativeAdContainer: container)
                nativeAdView.translatesAutoresizingMaskIntoConstraints = false
                self.view.addSubview(nativeAdView)
                NSLayoutConstraint.activate([
                    nativeAdView.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
                    nativeAdView.centerYAnchor.constraint(equalTo: self.view.centerYAnchor),
                    nativeAdView.widthAnchor.constraint(equalToConstant: 300),
                ])
            } else if let bannerAd = ad as? BannerAd {
                let adView = bannerAd.adView
                adView.translatesAutoresizingMaskIntoConstraints = false
                self.view.addSubview(adView)
                NSLayoutConstraint.activate([
                    adView.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
                    adView.centerYAnchor.constraint(equalTo: self.view.centerYAnchor),
                    adView.widthAnchor.constraint(equalToConstant: 320),
                    adView.heightAnchor.constraint(equalToConstant: 50),
                ])
            }
        }
    }

    func onError(msg: String, loadInfo: [String: Any]) {}
    func onAdImpression(ad: MSPAd) {}
    func onAdClick(ad: MSPAd) {}
    func onAdDismissed(ad: MSPAd) {}

    func getRootViewController() -> UIViewController? { self }
}

Mediation Networks Guide

Network-specific Info.plist entries required for each adapter are listed below.

Pod	Ad Network	Formats
MSPGoogleAdapter	Google Ad Manager / AdMob	Banner, Interstitial, Rewarded, Native
MSPFacebookAdapter	Meta Audience Network	Banner, Interstitial, Rewarded, Native
MSPNovaAdapter	Nova	Banner, Interstitial, Native, Rewarded
MSPMolocoAdapter	Moloco	Banner, Native, Interstitial, Rewarded
MSPApplovinMaxAdapter	AppLovin/Max	Banner, Native, Interstitial, Rewarded

---

Google

Info.plist — GAD identifier

Add your app's GAD identifier from the Google AdMob dashboard:

<key>GADApplicationIdentifier</key>
<string>ca-app-pub-XXXXXXXXXXXXXXXX~XXXXXXXXXX</string>

Info.plist — SKAdNetwork

<dict>
  <key>SKAdNetworkIdentifier</key>
  <string>cstr6suwn9.skadnetwork</string>
</dict>

---

Meta (Facebook)

Info.plist — SKAdNetwork

<dict>
  <key>SKAdNetworkIdentifier</key>
  <string>v9wttpbfk9.skadnetwork</string>
</dict>
<dict>
  <key>SKAdNetworkIdentifier</key>
  <string>n38lu8286q.skadnetwork</string>
</dict>

---

Moloco

Pass your Moloco App Key via params during initialization:

initParams.params = [
    InitializationParametersCustomKeys.MOLOCO_APP_KEY: "YOUR_MOLOCO_APP_KEY"
]

AppLovin

Pass your AppLovin SDK Key via params during initialization:

initParams.params = [
    InitializationParametersCustomKeys.APPLOVIN_SDK_KEY: "6KrA5SQHFTBpGDUU4FeLIZG..."
]

---

Best Practices

Preloading

The auction takes time. Suggest Call loadAd before the moment you need to show the ad:

• Banners: Load when the view controller loads (viewDidLoad).
• Interstitials: Load at app launch or immediately after the previous interstitial is dismissed.
• Rewarded: Load at app launch and again in onAdDismissed.

Destroying Ads

When an ad is no longer needed, call destroy() to release adapter resources and prevent memory leaks:

override func viewDidDisappear(_ animated: Bool) {
    super.viewDidDisappear(animated)
    currentAd?.destroy()
    currentAd = nil
}

Memory Management

Keep a strong reference to your MSPAdLoader instance for the lifetime of the placement. The AdListener is held weakly by the loader — your view controller or delegate object must remain alive until onAdLoaded or onError fires.

---

Troubleshooting

No ads filling

• Verify the placement IDs match what is Provisioned by Particles inc.
• Confirm initMSP completes before loadAd is called.
• Enable verbose logging during development: MSPLogger.shared.setLogLevel(level: MSPLogger.DEBUG).

onAdLoaded fires but getAd returns nil

getAd removes the ad from cache. Call it exactly once per load cycle and hold the returned ad strongly until you are done with it.

ATT prompt not appearing

ATTrackingManager.requestTrackingAuthorization must be called from the main thread after your root view controller is visible. The 1-second delay in the sample above handles the most common case; adjust as needed for your presentation flow.

Rewarded ad shows but reward is never granted

onAdRewardReceived fires only if the user watches the ad to completion. Do not grant rewards based on onAdDismissed alone.

Privacy

CCPA

Prebid SDK which is introduced by by MSP SDK will read UserDefaults (iOS) or SharedPreferences (Android) key IABUSPrivacy_String for US Privacy signal. Prebid SDK CCPA doc

GDPR

Prebid SDK which is introduced by by MSP SDK will read UserDefaults (iOS) or SharedPreferences (Android) keys IABTCF_gdprApplies and IABTCF_TCString for GDPR privacy signals. Predbid SDK GDPR doc

COPPA

Set your COPPA signal through init parameter isAgeRestrictedUser