Top Productivity apps in Japan 🇯🇵
As of June 4, 2026, ChatGPT is the #1 Productivity app in Japan on iOS.
iOSAndroid
#App / PublisherCategoryIntel
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仕事効率化 - 111
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バイトルトーク：バイトコミュニケーションアプリの新常識！ディップ株式会社
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What changed
Movement between the previous day and June 4, 2026.
New entrants
eGovPH#90
Risers
蔵衛門カメラ－電子黒板が使える工事写真アプリ#87 → #62
一日予定表 - カレンダー・ToDo リスト・日記#95 → #77
あと何日 カウントダウン&カウントアップタイマー#91 → #74
- Grok - AI Chat & Video
#16 → #4
Office Word:Edit Word Document#72 → #60
Fallers
- Postock: Family Organizer
#73 → #96
TimeMelter - 次世代のWEBコンテンツ閲覧アプリ#43 → #65
サイボウズ Office#71 → #87
direct（ダイレクト）#81 → #97
ポケットワーク#80 → #91
Methodology
Rankings are pulled daily from the iOS store charts for Japan. We snapshot the top entries each day and compute day-over-day change relative to the prior snapshot. See our full methodology for data sources, refresh cadences, and quality filters.
Frequently asked questions
What is the #1 Productivity app in Japan on iOS?
As of June 4, 2026, ChatGPT is the #1 Productivity app in Japan on iOS, based on the public iOS chart rankings Marlvel tracks daily.
How often are these rankings updated?
Marlvel snapshots the iOS charts for Japan every day and computes day-over-day movement. The "Current" page always reflects the latest snapshot; dated archive pages preserve each day's top 50.
Where does Marlvel's ranking data come from?
Rankings are pulled from the public iOS store charts for Japan. See our methodology for data sources, refresh cadence, and the quality filters applied before a ranking is indexed.