In languages like Java and Scala, we use the method equalsIgnoreCase to compare two strings ignoring case considerations. We might assume that is the same case in Kotlin, but the equivalent to equalsIgnoreCase is the equals method with an optional parameter ignoreCase set to true:

str1.equals(str2, ignoreCase = true)

ref: https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/equals.html