Comparison

和暦計算 vs Gen

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

Head to head
About

和暦計算

Features
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あの頃は何歳? 申請書、履歴書の記入時に和暦・西暦が出てこない。そんな時に便利です。 今日は大安! 本日の六曜、干支、十二支も表示します。 ●簡単操作の年号計算機です。 ・令和、平成、昭和、大正、明治、西暦をまたがった計算  ・平成?西暦? 両方表示します  申込書等の記入日が平成だったり西暦だったりでも大丈夫 ・元号記載の書類を調べるときに ●計算例 今年の年 ー 誕生年 = 年齢 例:令和1年 - 昭和60年 = 34年 計算の組み合わせは、4パターン。 1) 年 - 年 = 年数 2) 年 +/- 数字 = 西暦・和暦 3) 年  = 西暦・和暦 4) 数字 +/- 数字 = 数 ●利用場面 ・ あの頃は何歳だったのかなと調べたいとき ・ 20歳の頃は何年だったのかなと調べたいとき ・ 履歴書の作成。自分史の振り返り。この会社に何年勤めた? ・ 年金の計算。年と月で。 ・ 西暦と和暦のざっくり対比。この時代は日本では何時代だ? ・ 今年で何歳だったっけ? ・ 卒業する年は平成の何年だ? ・ 次のオリンピックの時は何歳になっている?

About

Gen

Features
Read full description

What year is Showa 5? A child was born in 2012, but what year is Heisei? Have you ever had any problems when converting from the Western era to the Japanese era, or from the Japanese era to the Western era? This app can mutually convert from the Japanese era name to the Christian era, and from the Western calendar to the Japanese era name. The Japanese era name that can be converted is from Meiji to Reiwa. On the top screen of the app, tap the Japanese era name or the one you want to convert to the Western calendar and enter it. Please select the Japanese era name by scrolling and selecting the era name and the year. Please enter the number directly for the year. You can check the converted history by tapping the history button. If you register frequently used items such as the birthdays of your parents, children, and spouse as favorites, you can easily check them on the Favorites screen. The app icon is designed to represent this year's Japanese era and Western calendar. If you place the icon in an easy-to-see location when you start up your iPhone or iPad, you can always check the era name of this year. In the free version, you can create up to 1 favorite and check up to 2 histories. If you want to create unlimited favorites and check 100 records, please consider purchasing the premium version within the app. ---------------------- Terms of Use and Privacy Policy: https://akikibai-laboratory.jimdofree.com/privacy-policy/

Screenshots

和暦計算3 screens
Gen4 screens

Verdict

The call

The clearest difference is in-app purchases: 和暦計算 at none against Gen's 1. Gen's advantage is update cadence (every 2 months vs every 6 months) and iOS requirement (12.0 vs 18.0). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Gen sells 1 one-off in-app purchase. 和暦計算 asks for nothing beyond the download.

UpkeepUpdate frequency

和暦計算 ships an update every 6 months, Gen every 2 months. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.

Scorecard3 real differences · 4 level
和暦計算 versus Gen: the parameters behind the verdict, then further details
Parameter和暦計算Gen
PriceFreeFree
Positive reviews66.7% of reviews—
Update frequencyEvery 6 monthsEvery 2 months — better
AdsYesYes
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.012.0 — better
Further details — not scored
Size7 MB15 MB
Age rating4+4+
DeveloperTakashi ShinyashikiKei Suefuji

In-app purchases

None

和暦計算

No in-app purchases

1 purchases

Gen

One-time1
  • PREMIUM$3.99

Questions

Is 和暦計算 free?
和暦計算 is free to download, with no in-app purchases.
Is Gen free?
Gen is free to download, with in-app purchases available.
Do 和暦計算 or Gen have ads?
Both 和暦計算 and Gen show ads.
Which is updated more often, 和暦計算 or Gen?
和暦計算 ships an update every 6 months, and Gen every 2 months. Most recently, 和暦計算 was updated on September 7, 2026 and Gen on September 10, 2026.

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