Report updated Apr 26, 2026
Gengou
For professionals working with Japanese government agencies, municipal offices, or corporations requiring precise date conversions.
Overview · Full Intel report in progress
Gengou is an established productivity app that is a paid app. With a 3.8/5 rating from 4 reviews, it shows polarized user reception.
What is Gengou?
Current Momentum
v3.0 · 8mo ago
MaintenanceLast updated 243d ago. 4 versions tracked.
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
ProductivityNo ranking data
Rating Pulse 🇺🇸
What makes this app unique?
What Does It Look Like?
What Are The Key Features?
Includes dedicated pickers for periods, eras, Christian years, and Japanese era years.
Allows users to toggle between Japanese and English text independently of system settings.
Displays the current year in either Japanese or Christian era format directly on the app icon badge.
Provides a search function for era names and specific years, including historical parallel era schemes.
How much does it cost?
Who Built It?
Masayuki Akamatsu
Specialized utility and creative tools for outdoor navigation, digital expression, and experimental media.
Portfolio
13
Apps
What other apps does Masayuki Akamatsu make?
Explore the full Masayuki Akamatsu report
Portfolio breakdown, audience, momentum, and every app published by Masayuki Akamatsu.
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
View the full user-sentiment analysis
Mood gauge, ratings & review-volume history, every praise / complaint / request, and sentiment over time.
Analysis in progress, available soon
What is the competitive landscape for Gengou?
How's The Productivity Market?
How does it evolve in the Productivity market?
Rank progression
1 active ranking tracked — 30-day window
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for Gengou
Key Takeaways
While the app offers niche utility for date conversion, user feedback indicates an urgent need for technical updates to ensure modern iOS compatibility.
Where Is It Heading?
Trend analysis
Available very soon