HiTouch: Happiness Index is a free Android app developed by Great Place to Work Institute Korea. It falls under the category of utilities and tools. The app allows users to track their happiness by clicking on one of the happiness icons. It stores the data which users can view later in the form of graphs to track their progress.

The app also serves as a tool for companies to view the data of their employees' well-being and make changes to the workplace if necessary. The app has a simple and user-friendly interface, making it easy for users to navigate and track their happiness. It is a great tool for individuals and companies to improve their well-being and maintain a positive work environment.