This is said to be the first-ever decline in the number of apps on the App Store, and it is thought to be a direct result of the mass removal of spam, dormant, and 32-bit apps a year ago. According to a report by App Figures, Apple App Store market "shrunk".
Google Play has, in contrast, outpaced Apple's App Store since 2012, but 2017 marked the biggest gap between the two platforms. Google developers, by contrast, released 17 percent more apps previous year, bringing the total number of new releases to 1.5 million. The company last week officially released iOS 11.3 to the public following an extensive period of beta testing with developers and the public. As we mentioned, this is claimed to be the first drop since the launch of the App Store in 2008. Furthermore, what led to a decline was that iOS developers released lesser number of apps as compared to Android app developers. Appfigures consider it as the largest jump since 2014.
As it regularly does following the release of a new version, Apple today has stopped signing iOS 11.2.6. The publication adds that twice as many apps were ported from iOS to Android than from Android to iOS.
The decline can be attributed in part to Apple's decision back in 2016 to remove old apps that were no longer compatible with newer iPhones and apps that didn't comply with recent review guidelines. Apple also removed a number of other low-quality apps from the App Store in 2017, including those that were clones of other apps that already existed in the store.