Top Productivity apps in Japan 🇯🇵
As of June 3, 2026, ChatGPT is the #1 Productivity app in Japan on Android.
AndroidiOS
#App / PublisherCategoryIntel
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What changed
Movement between the previous day and June 3, 2026.
New entrants

- PDF Reader App
#181
Risers
- MailTime: Secure Email Inbox
#180 → #170
- Swift PDF Reader & Converter
#63 → #58
- Clean Phone Storage
#102 → #98
- PikPak-Safe Cloud, Video Saver
#106 → #102
- PDF Reader Point
#21 → #18
Fallers
- シフト管理ならシフト手帳!バイトのシフトも給料計算も一括管理
#176 → #186
- Sticky Note: Polar Bear Days
#81 → #88
- Webroot® Mobile Security
#167 → #173
DeepSeek - AI Assistant#73 → #78
- 詐欺バスター Lite
#18 → #21
Methodology
Rankings are pulled daily from the Android 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.