This disclosure discloses a label producing apparatus comprising: an apparatus housing; a roll holder arranged on said apparatus housing that detachably mounts thereon a tape roll winding a label producing tape; an optical detecting device that optically detects a plurality of detection mark formed at a predetermined interval along a peripheral direction of a detected body provided so as to rotate at an angular velocity in coordination with an angular velocity of said tape roll on a side of said tape roll mounted to said roll holder or on a side of said apparatus housing; a residual amount identifying portion that identifies a residual tape amount of said tape roll based on a detection result of said optical detecting device; and a residual amount related information output portion that outputs residual amount related information related to said residual tape amount identified to a display device.