I've used this application from its first release, I believe, and have come to rely on it. It has saved my skin many times. The interface is simple and stays out of the way, the options allow you to set the number of days in advance for the notice, the missed dates, and lots of other useful features. If you set it in your login apps you'll never have to worry about forgetting a date agains. I use it for more than birthdays. I use it for anniversaries, special occasions, etc. Best of all, the price couldn't be better. A truly useful and elegant piece of software!