Does the Pro version allow these two things :

1. The ability to set custom snooze times (such as snooze for several days) ?

2. For recurring events, the ability to change or eliminate one event without affecting all the recurrences ?

1. Options->Advanced->Snooze times
2. Edit the event and add an exception date in the recurrence tab. Or delete the event from the calendar and you'll get a dialog asking if you want to delete just that instance.

The features are available both in the Pro and Lite versions.

Excellent. Thank you, Rainy. Can one instance of a recurring event be modified, such as in the description box, without changing all recurrences ?

Also, when deleting just one instance of a recurring event it asks, "Whole event" or "All following". What's the difference in function of these two choices ?

It's not possible to edit a single instance of an event. You need to create a new event for it.

The "All following" will leave the events that occurred before the date to the calendar where as "Whole event" will delete all the previous events too.

Thank you, Rainy.

Rainy wrote:
(...)
2. Edit the event and add an exception date in the recurrence tab. Or delete the event from the calendar and you'll get a dialog asking if you want to delete just that instance.
(...)

Hi Rainy,

I recently bought Rainlendar 2, because I liked to be able to sync with Google Calendar. Nealy everything works fine, just one thing I recognized:

If I delete one event from a recurrence-event, Rainlendar adds this single instance to the exception dates. Unfortunately it seems to me that Google Calendar does not understand this exception-date. In vice verse (if I delete a single event from the recurrence-events in Google) it works ... is this a known bug?