We won’t be supporting 10.14.6 anymore. (although it most likely run fine for the most part)
Our oldest mac from 2014 (7 years old as of this post) upgraded fine to macOS 11.5.2 Big Sur and FrostWire passes all tests in it.
Starting our next desktop build we will be focusing on supporting macOS 12 Monterrey as we’ve had a few users with newer computers reporting crashes.
Official FrostWire Blog 