Application User ID

User ID Usage

User ID is a unique Identifier that will differentiate between your different users. IronSource systems use it to know which user to reward upon successful ad completion.

Most of the calls to ironSource systems must include the User ID in order to sync the user data of your app with ironSource database.

Create a User ID

There are a couple of ways to generate a User ID, while it must be a unique string for each one of your users.

  • Method 1: assign an incremental number to each of your signed up users.
  • Method 2: use IDFV (Identifier for Vendor) for iOS or AID (Advertising ID) for Android.



SDK 6.4 and below:

NSString *idfv = [[[UIDevice currentDevice] identifierForVendor]UUIDString];

SDK 6.5 and above:

NSString *idfv = [IronSource advertiserId];


Note: This method cannot be called in the main thread as it may block leading to ANRs; we recommend running this on a different thread in the background. For more information, read more on Google APIs References.

SDK 6.4 and below:

final String id = AdvertisingIdClient.getAdvertisingIdInfo(this).getId();

SDK 6.5 and above:

final String id = IronSource.getAdvertiserId(Activity);

For Unity you can use the following Unity’s guidelines.