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kotlinlang

I’m looking into writing a simple multiplatform image annotation (markup) tool. It has to run on iOS and Android, and possibly web in the future. I’m interested in trying it using Kotlin, possibly using this approach: <https://medium.com/@anaredmond/cross-platform-game-ios-and-android-implementation-4-of-1aacde5eae1d>
Do you think this is a good idea? Are there pre-existing cross-platform open-source libraries for this? Could I somehow use the new declarative Compose canvas drawing api? Are there more suitable approaches to this, like OpenGL / webview / flutter?