Before you can A/B test your mobile app, register it with VWO.
Registering an app is a one-time process.
From the Test menu, select Mobile App A/B.
(https://app.vwo.com/#/test/mobile-ab)
![Screen Shot 2017-12-15 at 3.15.46 PM.png 348](https://files.readme.io/9a8617b-Screen_Shot_2017-12-15_at_3.15.46_PM.png)
Click APPS in the upper-right corner of the page.
![Apps.png 1910](https://files.readme.io/657cdab-Apps.png)
Click on CREATE APP on the right-hand side.
Type the name of your app and click CREATE.
![app_name_1.png 2516](https://files.readme.io/fa6d20a-app_name_1.png)
After you create an app, you can see the iOS and Android API Key
for both the platforms.
You will use this API Key during app initialisation.
![api_key.png 1894](https://files.readme.io/e7002a6-api_key.png)