I know most users want an iPad/iPhone Calendar to sync with all the other calendar apps, including the native Calendar app on the iDevice. I have the opposite needs. I am in search of an app that has the option of keeping its OWN calendar that DOES NOT merge with the native Cal app on the device (so that I can decide if I want to merge or not). I looked at some popular apps, such as Week Cal and Informant, but I can't tell if they have the option of keeping separate calendars? Can someone give me some advice on this?