Spotlight search in iOS 9

iOS 9 comes with Spotlight Search, a new feature that allows you to instantly search within the contents of your app. For example, you can search for particular text messages you have in your Burner app by typing in words from that message in your phone's spotlight search bar. While this feature can definitely come in handy, some users might prefer not to keep their private texts this accessible, so if you want to turn this feature off for Burner, follow these easy steps: 

Step 1: Open the Settings app on your iPhone, iPod touch or iPad with iOS 9 or later.

Step 2: Now navigate to the General > Spotlight Search section.

Step 3: Finally, toggle off Burner. And should you want to include an app in Spotlight’s search results, just flip its switch to the ON position.

Tip: While disabling an app prevents its content from appearing in Spotlight, you can still ask Siri to open it or use Spotlight Search to locate the app by typing the first few letters of its name.

Source: iDownloadBlog