Comparison

Reiwa Widget vs 年号電卓Plus

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Reiwa Widget

This utility app displays the current Japanese era directly on your device's notification center. It provides a quick and easy way to reference the Japanese calendar system.

Highlights
  • Japanese era display
  • Notification Center integration
  • Quick reference
  • Japanese calendar
Features
Read full description

Reiwa Widget displays Japanese Period on Notification Center.

About

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.

Highlights
  • 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
Features
Read full description

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。

Screenshots

Reiwa Widget3 screens
年号電卓Plus4 screens

Verdict

The call

The clearest difference is iOS requirement: Reiwa Widget at 8.2 against 年号電卓Plus's 17.6. On price, review sentiment, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Reiwa Widget ships an update every 2 months, 年号電卓Plus every 6 weeks. The most recent releases landed on October 4, 2026 and October 12, 2026 respectively.

Scorecard1 real difference · 9 level
Reiwa Widget versus 年号電卓Plus: the parameters behind the verdict, then further details
ParameterReiwa Widget年号電卓Plus
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews33.3% of reviews37.5% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS8.2 — better17.6
Further details — not scored
Size52 MB7 MB
Age rating4+4+
DeveloperAirwire products.Nakanishi Toshihiko

Customer experience

Reiwa Widget

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

年号電卓Plus

Written reviews8 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

In-app purchases

None

Reiwa Widget

No in-app purchases

None

年号電卓Plus

No in-app purchases

Questions

Is Reiwa Widget free?
Reiwa Widget is free to download, with no in-app purchases.
Is 年号電卓Plus free?
年号電卓Plus is free to download, with no in-app purchases.
Do Reiwa Widget or 年号電卓Plus have ads?
Neither Reiwa Widget nor 年号電卓Plus shows ads.
Which is updated more often, Reiwa Widget or 年号電卓Plus?
Reiwa Widget ships an update every 2 months, and 年号電卓Plus every 6 weeks. Most recently, Reiwa Widget was updated on October 4, 2026 and 年号電卓Plus on October 12, 2026.

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