益阳行 is a free iPhone app developed by Hunan Changxing traffic wisdom Technology Co. Ltd. It falls under the category of Utilities & Tools and offers a range of features to assist users in navigating the bus system in Yiyang, China.

The app provides real-time bus tracking, allowing users to check the current location and estimated arrival time of buses on all routes in Yiyang. It also offers information on the first and last bus timings for each route.

Another useful feature is the nearby station search, which helps users find the closest bus stops and provides real-time updates on bus arrivals at those stops.

益阳行 also includes a transit planner, allowing users to easily search for bus routes and make transfers if necessary.

Additionally, the app allows users to save their frequently used routes for quick access and provides notifications when buses are approaching their selected stops.

Please note that this app requires continuous GPS location tracking in the background, which may drain your battery. It is recommended to fully exit the app when not in use to conserve battery life.