And last, for the highly organized and slightly compulsive: Sexulator. A sex-calculator to help you keep track of your sexual activity. You have the option to choose between overall quantity of sexual activity, or to tally and keep averages on specific sex acts you and your partner conquer.
I would love to hear about any sex-related apps that you have used, and how it helped improve your sexual health. Please keep your comments related to the medical, health care or education categories, please!