Microsoft Authenticator Climbs to #9 in Japan App Store Rankings

Overview

As of October 1, 2026, the Japan App Store has seen significant movements in its Top Free Apps chart. With shifts in rankings reflecting user preferences and market trends, several apps have made notable gains while others have slipped. In this report, we will analyze the top climbers, new entries, consistent performers, and notable drops in the overall category.

Top Climbers

This month, several apps have made remarkable jumps in the rankings:

• Microsoft Authenticator climbed to #9, up 18 positions from #27.
• TRUSTDOCK（トラストドック）｜公的身分証で本人確認 moved to #13, gaining 15 spots.
• マツキヨココカラ公式アプリ advanced to #24, up 13 positions.
• Netflix jumped to #29, a rise of 13 places.
• 楽天ペイ-楽天ポイントカードも利用できるスマホ決済アプリ reached #23, up 12 positions.

New Entries

This month also welcomed a fresh face in the rankings:

• 天下一品公式アプリ made its debut at #18.

Top Performers

Stability is key for some applications, with the following apps maintaining their positions at the top of the charts:

• Bump（旧Zenly） holds the top spot at #1.
• ChatGPT remains strong at #2.
• setlog is steady at #3.
• ＪＩＣＣスマホアプリ retains #4.
• ジハンピ rounds out the top five at #5.

Notable Drops

Conversely, some apps have faced declines this month:

• Duolingo-英語/韓国語などのリスニングや英単語の練習 fell to #25, down 10 positions.
• My SoftBank dropped to #30, a decrease of 9 spots.
• Rocket Now : 出前/フードデリバリー fell to #21, down 7 positions.
• 郵便局公式アプリ slipped to #26, down 6 spots.
• ゆうちょ通帳アプリ is now at #16, down 4 positions.

In conclusion, the Japan App Store's Top Free Apps chart showcases dynamic shifts and emerging trends. As developers continue to innovate and adapt to user needs, staying informed about these movements will be crucial for future app strategies.