Theory Women(セオリー ウィメン)|公式通販サイト (theory.co.jp) is an online store in the Science niche, based in Japan, created in Dec 2016. It had 488,670 visits in Sep 2026 (SimilarWeb-measured), down 11% on the month before. It runs 3 live Meta ads in the AdLibrarySpy index. Its closest competitors in the AdLibrarySpy index, by niche and traffic, are ソニーが基本的に好き。 (kunkoku.jp), 敏感肌向け低刺激スキンケア・化粧品通販のナチュラルサイエンス (natural-s.jp) and Trainocate (trainocate.com).
Every answer comes from the AdLibrarySpy index, SimilarWeb and the store itself; anything not measured is left out. Article version: /answers/store/theory.co.jp
Measured by SimilarWeb for theory.co.jp.
Filter by format, country and run time, save creatives to boards, and get the full ad history — free.
Get a snapshot feed of its new ads, catalogue changes and traffic, save it to your workspace, and compare it with competitors — free, no card.