Tong Ting, also known as "Friend Help Friend" or "Tree Planting," is a free Android app developed by dev-startup.com in the Business & Productivity category. This app aims to encourage users to plant trees and help the environment by connecting them with friends and other users who are also interested in planting trees.

With Tong Ting, users can create or join planting groups and participate in tree-planting activities together. The app also provides information about the benefits of planting trees and how to properly care for them. Users can track their progress and earn rewards for their contributions to the environment.

The interface is user-friendly and easy to navigate, with clear instructions and a simple design. Overall, Tong Ting is an excellent app for those who want to make a positive impact on the environment and connect with like-minded individuals.