What are the differences between standard and deluxe? I checked the website and did not see a feature comparison list. Thank you.

Hello, I have interest in your software but I have 3 questions: - How does this synch with my other calendar (google, windows, samsung, facebook, etc) - the UI looks a bit of early or pre 2000-ish, any plan to give it a small "update"? - Does the world "Standard" in the software name means that you will later bring another version of the software? Thanks for your time....