An information processing device (10, 20) comprising: an input unit (11, 27) configured to receive input from a user; a detecting unit (12, 23) configured to detect a posture of said information processing device (10, 20); a control unit (13, 26) configured to control an operation of said information processing device (10, 20) in accordance with the posture of said information processing device (10, 20) which said detecting unit (12, 23) is configured to detect after confirming the presence or absence of a particular input via said input unit (11, 27); a display unit; a storage unit configured to store, when an application is executed by said control unit (13, 26) in accordance with an input via said input unit (11, 27), information relating to an usage status of the application; and a notifying unit configured to give notice of the information to the user, wherein during an execution of the application according to an input via said input unit (11, 27), if the posture of said information processing device (10, 20) which said detecting unit (12, 23) is configured to detect after receipt of an input command to terminate the application via said input unit (11, 27) is placed in a predetermined posture, said control unit (13, 26) is configured to terminate the application and to turn off display of said display unit, whereas if the posture of said information processing device (10, 20) which said detecting unit (12, 23) is configured to detect is placed in the predetermined posture without receiving any input command to terminate the application, said control unit (13, 26) is configured to terminate the application, to turn off display of said display unit and to restrict notice of the information relating to the usage status of the application stored in said storage unit via said notifying unit. an input unit (11, 27) configured to receive input from a user; a detecting unit (12, 23) configured to detect a posture of said information processing device (10, 20); a control unit (13, 26) configured to control an operation of said information processing device (10, 20) in accordance with the posture of said information processing device (10, 20) which said detecting unit (12, 23) is configured to detect after confirming the presence or absence of a particular input via said input unit (11, 27); a display unit; a storage unit configured to store, when an application is executed by said control unit (13, 26) in accordance with an input via said input unit (11, 27), information relating to an usage status of the application; and a notifying unit configured to give notice of the information to the user, wherein during an execution of the application according to an input via said input unit (11, 27), if the posture of said information processing device (10, 20) which said detecting unit (12, 23) is configured to detect after receipt of an input command to terminate the application via said input unit (11, 27) is placed in a predetermined posture, said control unit (13, 26) is configured to terminate the application and to turn off display of said display unit, whereas if the posture of said information processing device (10, 20) which said detecting unit (12, 23) is configured to detect is placed in the predetermined posture without receiving any input command to terminate the application, said control unit (13, 26) is configured to terminate the application, to turn off display of said display unit and to restrict notice of the information relating to the usage status of the application stored in said storage unit via said notifying unit.