Birthday.se is an Android application developed by Berlock Information AB. It is a free utility tool that helps you keep track of your friends' birthdays. With its user-friendly interface, it is easy to add and manage birthdays, so you never forget to wish your loved ones a happy birthday.

The app allows you to import birthdays from your contacts or add them manually. It also provides reminders, so you can plan ahead and avoid last-minute rush. Additionally, you can customize the app's appearance with different themes to suit your preferences.

Overall, Birthday.se is a great tool for anyone who wants to stay on top of their friends' birthdays. Its simple design and useful features make it a must-have for anyone who values their relationships.