The present invention relates to a system, an apparatus and a method for integrally measuring an advertisement effect between heterogeneous media. As an example, a system for for integrally measuring an advertisement effect between heterogeneous media includes a media research company server (100) for transmitting an advertisement and basic information including GRPs and REACH of each media for the advertisement to a GRPs compensation device (200) and a heterogeneous integrated REACH calculation device; the GRPs compensation device (200) for outputting impact GRPs obtained by correcting the GRPs of each media; and the integrated REACH calculation device (300) for outputting heterogeneous integrated REACH obtained by removing an advertisement duplication rate between media from the REACH of each media transmitted from the media research company server (100).
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