The company I work for has several departments, so I use the filters on the calendar to weed out jobs that have nothing to do with me. In iOS, when I set filters on the calendar, if I go into an invoice or something then come back to the calendar, it wipes out the filters that I had on the calendar. The browser, however, holds the filters that I set almost indefinitely - even if I log out and log in again. Just a thought, because I'd be more likely to use the app if the filters held. Thanks!