App-ads.txt adoption

About app-ads.txt

App-ads.txt is an extension of the IAB (Interactive Advertising Bureau) ads.txt initiative launched for websites in 2017. Authorized Digital Sellers for Mobile Apps (app-ads.txt) has been released to allow mobile app publishers to publicly declare the specific advertising systems which are authorized to sell their digital advertising inventory.

App-ads.txt is a plain text file hosted on the domain of the app developer’s website to identify their authorized digital sellers. This allows advertisers to trust that they are buying authentic and trustworthy app inventory. 

Buyers that bid on app inventory can use app-ads.txt files in order to verify that their impressions come from authorized sellers, which builds trust and increases revenue.

Implementing app-ads.txt

Step 1: Creating your app-ads.txt file

1. Create a text file and rename it to app-ads.txt. 
2. Format the file as shown in the below example: 

<Field #1>,<Field #2>,<Field #3>,<Field #4>

Field #1 = Domain name of the advertising system
Field #2 = Publishers Account ID
Field #3 = Relationship (DIRECT or RESELLER)
Field #4 (Optional) = Certification Authority ID

Example: 
 Tappx.com, 123456, DIRECT

Step 2: Add Tappx entries to your app-ads.txt file

1. Log in to Tappx dashboard.
2. In the right-hand menu, click My Account and then Authorized sellers (app-ads.txt) or follow this link: https://dashboard.tappx.com/authorizedsellers.
3. Copy and paste the text into your app-ads.txt file or download the file and save it as app-ads.txt.

Step 3: Publish your app-ads.txt file

1. Upload your app-ads.txt file to the root directory of your website domain so it would be available through your-domain.com/app-ads.txt.
   
   TIP: If you don’t have your own domain, you can use our FREE app-ads.txt hosting tool, which can be found at https://www.app-ads-txt.com. 
2. Make sure your website has been set up properly in Google Play, Apple Store or any other app store listing. 
   
   Google Play
   1. Sign in to your Play Console.
   2. Select an app.
   3. On the left menu, clickStore presence> Store listing.
   4. Scroll down to "Contact Details".
   5. Set your URL.
   
   App Store
   1. Sign in to your App Store Connect.
   2. Choose an app.
   3. Set your app’s Marketing URL.