Calendars United app for iPhone and iPad

There are many public calendars around offering useful info -
Football , Soccer , BasketBall , Cricket , Holidays , Shows. Many exist
but your ability to use them to help you plan ahead is limited. When
you try to subscribe to many of them you find
your Calendar app screen cluttered with too many details.
The reason is clear. Calendar apps are geared to help you manage
your busy day to day activity but not your next month vacation or help
you decide on which evening next week you stay at home to watch an
your favourite sport team.

With Calendars United you can subscribe to as many Calendars you wish.
When you have a question , When you want to plan ahead, you can very easily
compose a query to combine and compute the information you just needed.

The query is basically an elementary school formula with the following rules

CalendarA + CalendarB - All Events in Calendar A and CalendarB
CalendarA - CalendarB - All Events in Calendar A not appearing in CalendarB
CalendarA * CalendarB - All events that appear in both CalendarA and in CalendarB

Lets make a simple Example. You plan to be in London next April but you want
to watch soccer there so you want to be there on a day when one of your
favourite London clubs play. Easy Query -

(Chelsea + Arsenal + Tottenham + Westham ) * apr

The app is to use. Hints are displayed to make you complete your
query as fast as possible. You can save the results for later use and
you can build as complex formulas as you wish.