1km is a free Android app that falls under the Social & Communication category. It is designed to help you discover new people around you and make friends with them. The app has four features - 1km photo, 1km Say, 1km Club, and 1km Chat.

1km photo allows you to see four pictures of users around you at once. This feature helps you to see who is around you and be friends with them. 1km Say is an anonymous bulletin board where you can share your thoughts and get sympathized with. 1km Club allows you to join clubs with various interests and be friends with people who share similar interests. Finally, 1km Chat is a real-time chat feature that allows you to chat with your favorite user anytime, anywhere.

The app is perfect for those who want to make new friends around them. With 1km, you can communicate and get along with people who have similar interests as you. The app is easy to use and has a simple user interface. However, it is important to note that this service includes in-app purchase items, and a separate fee will be charged for purchase.

Overall, 1km is a great app for those who want to make new friends nearby. The app has a lot of potential and is worth trying out.