That is part of what i'm trying to accomplish in https://prot.ai Reduce friction with scheduling and recurrence.
By using cloud apps, calendar aware, an operate by difference. So the calendar negotiates for you when is a good time.
* That initial "How to use it" diagram completely puts me off the product - it seems dizzyingly complex, and to have that right at the top before I even know what the product is seems like a mistake.
* Consider getting a native speaker to review the text - the grammar is off in a fair few places.
* Write a simpler paragraph for what your product does - I've read through the entire landing page, and your HN comment, and I still don't understand what it is you are selling.