Information providing system and vehicle-mounted apparatus

An information providing system comprising a portable terminal apparatus providing predetermined information to a vehicle-mounted apparatus and comprising the vehicle-mounted apparatus,

• the portable terminal apparatus comprising:
• a provided information obtaining unit that obtains provided information including headline data and main text data from an information distribution server apparatus;
• a voice data obtaining unit that transmits the headline data to a voice synthesizing server apparatus, and obtaining voice data obtained by converting the headline data into voice from the voice synthesizing server apparatus;
• and
• a display command unit that, when receiving a predetermined notification indicating that the headline data is selected from the vehicle-mounted apparatus, gives a command to cause the vehicle-mounted apparatus to display the main text data corresponding to the headline data,
• the vehicle-mounted apparatus comprising:
• a display unit that displays the main text data corresponding to the selected headline data given by the portable terminal apparatus when the command from the display command unit is received;
• a playback unit that plays the voice data;
• and
• a selection operation notification unit, when receiving a selection operation performed by a user, notifies the portable terminal apparatus that the selection operation has been performed, the selection operation being an operation to select the headline data corresponding to the voice data.