Koyomi Downloads & RevenueKoyomi | Japanese year checker · App Store
Not in any tracked top chart right now.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperNAOYA ONO
CategoryReference
PriceFree
Released
Rating★ 5.0 (2)
Version1.3.0
Age rating4+
First seen by us
24 Oct 2026
24 Oct 2026Koyomi | Japanese year checker update history & changes
Last change · 3 events since 22 Apr 2022Full timeline ↓Full timeline · 2 events in the last 12 months
- 🆕Koyomi | Japanese year checker first spotted by AppInsiderJapan (found via developer)
- 🆕Koyomi | Japanese year checker released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
5.0 ★
2 ratings
Measured
Koyomi | Japanese year checker on the App Store
App details
App ID
1620479221
Publisher
NAOYA ONO
On the store since
Apr 2022
4 years on the store
Minimum OS
iOS 12.0+
iPhone 5s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
2
EN JA
Size
44 MB
Also listed in
Education
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
5.0 ★
2 ratings
Measured
Ratings
2
Measured
About Koyomi | Japanese year checker
This is a calendar quick reference app for the Western calendar, Japanese calendar, Age, and Chinese zodiac.
It is also compatible with the “Reiwa” period and you can check it as soon as you start the app.
“What Japanese year in 2023?”
“What is next year's zodiac sign?”
What year is the first year of the Reiwa period?”
This app will solve these questions in a flash.
● Useful features
1. Bookmark
You can bookmark the years you frequently check as favorites.
If you register your family, boyfriend/girlfriend's information, you can immediately open the app to check it, which is useful when filling out documents, job hunting, etc.
2. Display settings
By default, the year is displayed from the first year of Meiji (1868), but if you do not want to display old information such as Meiji or Taisho, you can choose to hide it.
It is also compatible with the “Reiwa” period and you can check it as soon as you start the app.
“What Japanese year in 2023?”
“What is next year's zodiac sign?”
What year is the first year of the Reiwa period?”
This app will solve these questions in a flash.
● Useful features
1. Bookmark
You can bookmark the years you frequently check as favorites.
If you register your family, boyfriend/girlfriend's information, you can immediately open the app to check it, which is useful when filling out documents, job hunting, etc.
2. Display settings
By default, the year is displayed from the first year of Meiji (1868), but if you do not want to display old information such as Meiji or Taisho, you can choose to hide it.
Latest updates
1.3.0
Performance improvements.
