The "Эхолоты Практик 7" app is a lifestyle program designed for fishing enthusiasts. The app requires the "Практик 7 Маяк" device to function. This device is an echo sounder that helps to detect potential fishing spots, find fish, and explore the depth of the water. The app serves as a companion to the device, providing an easy-to-use interface to control and interpret the data received from the "Практик 7 Маяк."

The app is easy to navigate, with a simple interface that allows users to monitor water temperature, depth, and fish activity. The app also provides real-time sonar data, making it easier for users to locate fish. The app is free to download and use, making it accessible to all fishing enthusiasts. However, it is important to note that the app is only compatible with Android 9.0 and above.