Hello, can I use this library when I have KMP project with IOS as well?

Yes, we support iOS targets.

But when I try to use

linkDebugFrameworkIosX

I have an error like that:

Could not find ".../kotlinx-datetime-iosx64/0.1.0/7f8408e9d3a4a1bdd33be41f3acc52008b52fc57/kotlinx-datetime.klib"

Take a look at this issue https://github.com/Kotlin/kotlinx-datetime/issues/50, the authors had a similar problem there and they managed to find a solution. Do you have a setup like in that issue? I mean mostly Kotlin plugin version/Gradle version

Yes, seems like the same