A tool system is used for a plurality of tools. Each of the plurality of tools is a portable tool and includes: a driving unit to be activated with power supplied from a power source; and an image capturing unit. The tool system includes a reference image generating unit and an output unit. The reference image generating unit generates, based on a second captured image, a reference image to be compared with a first captured image. The first captured image is shot, while a current work target is being identified, by the image capturing unit. The second captured image is also shot by the image capturing unit. The output unit makes a display unit display the second captured image while the reference image generating unit is generating the reference image.