Showa100
Not in any tracked top chart right now.
Updated 14 Oct 2026 · rankings refresh through the day
Developerkaitekidigital Inc.
CategoryProductivity
PriceFree
Released
Rating★ 4.5 (2)
Version2.0.0
Age rating4+
First seen by us
12 Oct 2026
12 Oct 2026Rating
4.5 ★
2 ratings
Measured
Showa100 on the App Store
App details
App ID
1579491974
Publisher
kaitekidigital Inc.
On the store since
Aug 2021
5 years on the store
Minimum OS
iOS 16.6+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
JA
Size
5 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.5 ★
2 ratings
Measured
Ratings
2
Measured
About Showa100
Japanese Era Converter
A simple app for converting years between the Japanese eras (Reiwa, Heisei, Showa) and the Western (Gregorian) calendar.
Designed to lighten the workload for anyone who handles Japanese documents, this tool makes year conversion quick and easy with a simplified, user-friendly interface.
A simple app for converting years between the Japanese eras (Reiwa, Heisei, Showa) and the Western (Gregorian) calendar.
Designed to lighten the workload for anyone who handles Japanese documents, this tool makes year conversion quick and easy with a simplified, user-friendly interface.
Latest updates
2.0.0
We've completely rebuilt the app!
With our new two-color text system, you can now instantly distinguish between official era years and the unofficial past and future years shown for convenience. We've also added support for the Meiji and Taisho eras.
We hope you continue to enjoy the app!
