Most tools are the same on day 100 as day one. Jarvis is not. It quietly learns from how you work, so it fits you better over time.
It learns your voice
Jarvis picks up on how you write, so dictation and drafts sound like you, not like a generic assistant.
It notices habits
When you do the same thing on a schedule, Jarvis offers to turn it into a routine, so you do not have to think to set one up.
It takes feedback
When you correct or edit what it produced, Jarvis uses that to do better next time.