Crossplatform
Cross Platform
Javascript Core
javascriptcore-the-holy-grail-of-cross-platform
Kotlin Multi Platform
Kotlin multiplatform get-started
iOS iosArm64 still isn't in Tier 1 but hopefully it gets added.
By default, an Objective-C framework produced by Kotlin/Native supports only one platform.
However, you can merge such frameworks into a single universal (fat) binary using the lipo tool.
This operation especially makes sense for 32-bit and 64-bit iOS frameworks.
In this case, you can use the resulting universal framework on both 32-bit and 64-bit devices.