To provide correct motion data to a user even in the case the positional data cannot be acquired.

In the case, the motional data display controller discriminates that the positional data is acquired while the user is moving, calculates the present motion data from the positional data (A7 to A13, and A15), but in the case of discrimination that not acquired, calculates and stores the conversion data for converting from vibration data into the motion data from the calculated motion data (A7 to A 19), between the time point of discrimination that not acquired and the time point discriminated that acquired, converts and estimates from the detected vibration to the present motional data (A7 to A29, and A31), and while discriminated that acquired, displays and controls the calculated motional data as the latest motional data, and between the time point discriminated that not acquired and the time point discriminated that acquired, displays and controls the estimated motional data as the latest motional data (A21 to A23).