I need an app for ipad, i would like to sync to iphone, and share with two other users. I need to create a calendar or spreadsheet to keep track of employee hiring by the day - to be sure we have enough staff (7 people per day). Ideally I would like the day to indicate by color if we have booked enough people (green) or still need to hire more (red). I would also like to make notes per day, ie, which employees i have already contacted but are unable to work, so that I don't just keep contacting same people. I would prefer something with a cut copy paste so that on the majority of days i could just input our regular employees quickly and easily instead of having to manually input each one, each day. And i would love it if it would automatically update and sync across devices, instead of having to be saved and uploaded to a dropbox/google docs type of platform. I have started trying to make something like this with Numbers, but it doesn't sync across users unless i utilize dropbox/google docs, and frankly, i'm worried about ending up using an old / non updated version of the file and making mistakes. Thanks for any help or direction you can send me!