the gmail app and Google calendar work beautifully together as your main planning tools (if you have your emails show up in the gmail app).you can access them anywhere you can get on-line with just your gmail log-in.a number of free scheduling tools, like (that we use and love) sync beautifully with Google calendars making booking appointments a breeze.you can easily share all or parts of your calendar with family, co-workers, and even sub-contractors.