Desktop GUI is on it's way in 2023 according to lead dev. Profile syncing like Signal (leader and follower device) is on the roadmap and mentioned here:

GitHub

Desktop app (GUI) · Issue #425 · simplex-chat/simplex-chat

Hi, Thank you for this project. It's great to have a new secure messenger. My suggestion is to make a GUI desktop app for Linux. Thank you for your...

GitHub

SimpleX Chat • simplex-chat

SimpleX Chat