Another mobile-only messaging app. If I wanted to use my phone, I'd just use SMS or RCS!
[0]: if you drop a dependency into the jar - https://github.com/JetBrains/skiko/releases/download/v0.7.40... (you want the DLL, the checksum, and the .dat)
I was able to create an account just fine, though I don't have any contacts to message. I don't have any reason to believe it wouldn't work fine, though.