Depends on your product I guess. If it's something truly different and novel then maybe it doesn't matter if the UI is kinda sucky because I have nothing to com

Depends on your product I guess. If it's something truly different and novel then maybe it doesn't matter if the UI is kinda sucky because I have nothing to compare it to. If it's a twist on something more common like say an email client then I probably won't even bother trying it if it's ugly , slow, clunky or crash prone even if you have added features that might be useful.