Kotlin, a popular cross-platform language from the company JetBrains, lets developers create an app that is compatible on iOS and Android platforms and only requires coding it once.

Apple's Swift programming language is now being officially extended to support Android app development through the establishment of a ...

It’s no surprise that Google’s hope is that over time, all Android developers will switch over to Kotlin. “There is still quite a bit of Java still happening on Android,” Ward said.

As it stands today, Android apps are generally coded in Kotlin, but Apple is looking to provide its Swift coding language as an alternative.