App Store and Google Play also been around for more or less a decade now, the market is pretty maturing. Moving forward let see what are the important requirement that shall be meet when submitting app for those 2 app stores.
Starting July 2018, all iOS app updates submitted to the App Store must be built with the iOS 11 SDK and must support the Super Retina display of iPhone X.
In an effort to ensure a higher degree of security and performance among Android apps, Google noted today that it will only allow 64-bit apps in the Play store starting in August 2019.
August 2018: New apps required to target API level 26 (Android 8.0) or higher.
November 2018: Updates to existing apps required to target API level 26 (Android 8.0) or higher.