Pill'oops is a free Android app developed by Le Planning Familial that helps you track your birth control pills more easily. The app provides personalized advice in case you forget to take your pill. This advice takes into account your pill type, the date of your missed pill, and the sexual activity you've had, in order to indicate your risk period and the precautions you should take.

In addition to this, Pill'oops can calculate your future menstrual periods based on your pill type and the start date of your pill pack. You can also set reminders to take your pill, or to indicate if you've missed a pill. However, it's worth noting that this reminder feature may not work properly on certain Android smartphones, such as Samsung Galaxy, Huawei, and Honor.

Overall, Pill'oops is a useful tool for anyone looking to keep track of their birth control pills and stay on top of their reproductive health.