Festivus is a wonderful season in which family and friends gather together and tell everyone everything they hate about each other.
This part of Festivus is referred to as the Airing of the Grievances.
Grievance! allows you to record who has grieved against you, how, and how angry it has made you - for the whole year.
If you open Grievance! on a day that is not Festivus (December 23rd), you may only add new grievances - you may not see previously entered grievances.
On Festivus (December 23), Grievance! will show you everything that has ticked you off over the past year, and allow you to air each grievance with the offending person.
Grievance! makes anger and resentment fun!