Kotlin Multiplatform Mobile is a young promising technology, but is it there to stay? And is it worth trying out? This talk is based on the experience of developing two very different cross-platform apps with KMM. The goal of this talk is to introduce KMM, discuss the pitfalls that a new KMM developer may encounter and share some valuable tips that were collected along the way of KMM development: from preferable app architecture to team requirements.