Wonderful! A thorough work has been done here - content-wise and design-wise. Thank you. Yishar Koach! 2 important things for improvement: (1) Ability to select language (other than device's default) (2) Even a slight hand-movement to the left or to the right  while sliding the screen up or down  causes a date-change (a move to a neighboring date). This is very annoying. EDIT: (1) Google prohibits the user from choosing (by himself) another language for the UI on his own device?? (2) Great.
November 10 2016