Clean, smart, beautiful, capable. I've used a ton of calendar apps and with most, there's usually a bug or glitch of some kind—maybe a small detail about how it syncs with Google Calendar, or handles time zones, etc.—but Vimcal has highest attention to detail of any app I've used. And a responsive tech team. More than once I've been told (by engineers on other calendar apps), "Yeah we know about that and we're not gonna fix it." I've NEVER heard that from the Vimcal team.