Цахилгаан хэрэглэгч is a new mobile application developed by Astvision LLC for the residents of Ulaanbaatar city, Mongolia. It is a free program that provides users with access to various services offered by the Ulaanbaatar City Transportation System (UBCTS) JSC. The app is available for Android users.

The main features of the app include real-time bus tracking, route planning, and information about bus schedules and fares. Users can also purchase bus tickets and view their transaction history. The app is designed to be user-friendly and easy to navigate, making it a convenient tool for those who rely on public transportation in Ulaanbaatar.