Apple is ready to carry out some "spring cleaning" of its App Store
. It announced in an email last Thursday that it will remove apps that “no longer function as intended, don’t follow current review guidelines, or are outdated.” The following chart shows why Apple
feels that step is necessary. 90 percent of all apps in the App Store are invisible or "zombies". Such apps can only be found by directly searching for them, according to analytics firm Adjust.