If you often use the subway in Moscow, the "Subway-Alarm clock" you will find useful. When you draw near to the metro station, the alarm will send you notification sound. The app syncs with the most popular mobile network operators: MegaFon, Beeline, MTS and Tele2. To download the database of stations in the primary application, need an online connection, and when re-using work without Internet. Start service button "start" and select your desired metro station. Signal you can select both sound and vibrate mode. Works in conjunction with GPS.