About Twitter's app graph
To help build a more personalized Twitter experience for you, we collect and occasionally update the list of apps installed on your Android device so we can deliver content that you might be interested in. If you’re not interested in a personalized experience you can adjust your preferences at any time as described below. Additionally, if you have previously opted out of interest-based ads by adjusting your Android device settings to “Opt out of Ads Personalization,” we will not collect your apps unless you adjust your device settings.
What data does Twitter collect?
We only collect the list of applications you have installed. We are not collecting any data within the applications. We've designed app graph to try and exclude apps that appear to be especially sensitive, such as ones dealing with your health, sexual orientation, or religious beliefs.
How will I know this feature is turned on for my account?
We will notify you about this feature being turned on for your account by showing a prompt letting you know that Twitter uses the apps on your device to help personalize your experience. Until you see this prompt, this setting is turned off and we are not collecting a list of your apps. If you do not see Personalize based on your apps enabled in your Personalization and data settings, app graph collection is not active for your account.
How do I turn this feature off and remove my data from Twitter?
You can easily control whether Twitter collects a list of apps on your mobile device. Just go to your Personalization and data settings on Twitter.com or Twitter for Android, as described here, and disable Personalize based on your apps while you’re logged in to Twitter. Once you turn off the setting, we will remove your app graph data from Twitter and stop future collection.