# Showa100 — Japanese year conversion table

> Japanese year conversion table (iPhone/iPad app by kaitekidigital Inc..)

- Source: https://appshunter.io/ios/app/showa100/id1579491974 (this page in markdown: same URL + `.md`)
- Developer: [kaitekidigital Inc.](https://appshunter.io/developer/1305009205)
- Category: Productivity, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 16.6 · 5 MB
- Languages: Japanese
- Released: 2021-08-03
- Data updated: 2026-08-14
- User reviews in markdown: https://appshunter.io/ios/app/showa100/id1579491974/reviews.md

## What is 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.


## Version history (last 2 releases)

### 2.0.0 — 2025-07-22

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!

### 1.0.3 — 2021-08-04

No release notes.

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## More apps by kaitekidigital Inc.

- [Find Watanabe-san](https://appshunter.io/ios/app/find-watanabe-san/id1578040792)
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- [Animetize AI](https://appshunter.io/ios/app/animetize-ai/id6745146593)
- [おじさんAIチャット](https://appshunter.io/ios/app/ai/id6746497359)

All apps by kaitekidigital Inc.: https://appshunter.io/developer/1305009205

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-14.*