年号電卓Plus vs Visa Nippon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
年号電卓Plus
Easily convert between Western and Japanese eras, and determine birth years from age. Explore historical context with explanations for era changes and significant events of each year.
- Western to Japanese era conversion
- Japanese era to Western conversion
- Calculate birth year from age
- View era start and end dates
- Understand reasons for era changes
- Discover major events of each year
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年号・元号の変換に迷ったら、このアプリひとつで解決！ 待望の西暦和暦早見表に対応しました！ 西暦⇔和暦の変換から、年齢での誕生年検索まで、日常のちょっとした疑問をすばやく解消できます。 さらに Apple Watch に対応！ 手首でサッと確認できるようになりました。 調べるだけでなく、改元の理由やその年の主な出来事もわかるので、歴史の勉強や雑学としても楽しめます。 【変換モード】 ・西暦 → 和暦（令和・平成・昭和・大正・明治） ・各元号 → 西暦 ・年齢 → 西暦・和暦（誕生年を逆算） 【詳細情報】 ・各元号の開始年・終了年を表示 ・改元の理由（iPhone版のみ） ・その年の主な出来事 ※Apple Watch版では改元理由の表示はありません。 【iPhone版・Apple Watch版の違い】 ・iPhone版は西暦和暦早見表に対応。 ・iPhone版はテンキー入力に対応。和暦の上限を超えた年（例：大正16年）をそのまま入力・表示しながら、西暦や次の元号への変換結果を確認できます。 ・Apple Watch版はテンキー入力の代わりにカウント操作を採用。和暦の上限に達すると自動的に次の元号へ切り替わるため、直感的に操作できます（例：大正15年の次は自動で昭和2年に）。 【Apple Watch版の操作】 ・上にスワイプすることで、年齢・各元号の開始年／終了年・その年の主な出来事をまとめて確認できます。 ・＋／－ボタンの長押しで高速カウントアップ／カウントダウンが可能。目的の年にすばやくたどり着けます。
Visa Nippon
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“Visa Nippon” makes it possible to create a work visa application for free as easily and quickly as possible. We will complete a work visa based on the application information you entered from the app. ▼Supports smartphone apps You can enter your information anywhere, anytime across borders with the smartphone app. If you don't have a computer, you can easily create a visa application. ▼Easy operation without instructions You can create a visa application surprisingly smoothly by answering the questions that appear one by one. ▼Support "Specified Skilled Worker" visa We support visa for "Engineer/Specialist in Humanities/International Services" as well as "Specified Skilled Worker".
Screenshots
Verdict
The clearest difference is update cadence: 年号電卓Plus at every 6 weeks against Visa Nippon's every 31 months. Visa Nippon's advantage is iOS requirement (11.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
年号電卓Plus ships an update every 6 weeks, Visa Nippon every 31 months. The most recent releases landed on July 27, 2026 and May 19, 2026 respectively.
| Parameter | 年号電卓Plus | Visa Nippon |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 37.5% of reviews | — |
| Update frequency | Every 6 weeks — better | Every 31 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Nakanishi Toshihiko | KTC Co., Ltd. |
In-app purchases
年号電卓Plus
No in-app purchases
Visa Nippon
No in-app purchases
