Comparison

年号電卓+ vs ポケット手帳

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

Head to head

About

年号電卓+

This calculator-style app allows you to easily convert between Japanese eras and Western years, and calculate ages. Input a year or age to see the corresponding era and Western year, accommodating birth month and day flexibility. You can also customize era keys for quick access.

Highlights

Era to Western year conversion
Western year to era conversion
Age calculation
Flexible birth date handling
Customizable era keys

Features

Read full description

「年号電卓+」は電卓風の画面で手軽に年号や年齢を調べる事が可能です。年号または西暦を入力すると年齢を表示し、年齢を入力すれば年号と西暦が表示されます。二通りの答えを表示させているので、生まれた月日がいつであっても柔軟に対応できます。年号キーを長押しする事で年号キーに好きな年号を設定する事ができます。 ※注意事項・年号変換機はiPhoneの時刻設定を利用しています。正しく機能させる為には、時刻設定が正しい必要があります。・不具合や要望がありましたらサポートよりお問い合わせください。・年齢の項目には満年齢を表示しています。

About

ポケット手帳

Read full description

ポケットに入れられる手帳です。

Screenshots

年号電卓+4 screens

ポケット手帳3 screens

Verdict

The call

年号電卓+ and ポケット手帳 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

年号電卓+ ships an update every 2 weeks, ポケット手帳 weekly. The most recent releases landed on August 26, 2026 and August 5, 2026 respectively.

ScorecardNo meaningful differences

年号電卓+ versus ポケット手帳: the parameters behind the verdict, then further details
Parameter	年号電卓+	ポケット手帳
Price	Free	Free
Positive reviews	60.0% of reviews	—
Update frequency	Every 2 weeks	Weekly — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPod — better	iPhone
Requires iOS	15.6 — better	16.0
Further details — not scored
Size	0 MB	21 MB
Age rating	4+	4+
Developer	SHINICHI KANEDA	Kento Takise