Basically, the only reason I use Kik, is because that's what everyone uses. It's probably my least favorite messaging app. My personal favorite is Wire. It is available for iOS, Android, Windows, macOS, Linux, and web browsers. The nice thing about it, you can switch between devices or logout, and not lose the conversations. You can also do voice chat and video chat, all protected by a secure end-to-end-encryption. All you need to signup is an email address, so it's totally anonymous.