Comparison

Old Japanese Clock Lite vs CalendarPlus

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

Head to head
About

Old Japanese Clock Lite

Explore a historical Japanese timekeeping system, the Temporeki, used in the late Edo era. This app is useful for understanding historical documents, adjusting traditional Japanese clocks, and immersing yourself in the lifestyle of ninjas and samurais.

Highlights
  • Temporeki clock system
  • Historical Japanese timekeeping
  • Edo era lifestyle recreation
  • Wadokei clock adjustment aid
  • Educational historical tool
Features
Read full description

This app is a Temporeki clock. The Temporeki is a temporal hour system that was primarily used in the late Edo era (1844–1872). This app proves invaluable when reading Japanese historical documents, adjusting Japanese clocks (Wadokei), or recreating the lifestyle of ninjas and samurais, among other apps. For more detailed information, please visit the developer's website. ■ Exemption from Liability: ASTI shall not be held responsible for any consequences arising from the use of this app. We disclaim all liability for any potential damages, injuries, or losses resulting from app usage.

About

CalendarPlus

Features
Read full description

説明+++++++++++++++++++++++++++++++ ●前作「Calendar2015」からパワーアップ。 ●今日の和暦と西暦の表示に特化したシンプルオペレーションのコンセプトを引き継ぎながら、  金融機関などで更に便利な簡易電卓も装備。 ●その計算結果を履歴として残せます。 ●履歴画面では、計算結果の履歴だけでなく、電卓画面で入力した数字なら簡易メモにもなります。 ●金融機関などで、「今年は、201x年?、平成2x年?」と、分からなくなった時がありませんか。  そんな時に、お使い下さい。 ●簡易、年齢早見にもお使い下さい。 ●西暦xxxx年は、何年前?という、疑問にもお答えします。1868年(明治元年から)対応しています。 特徴++++++++++++++++++++++++++++++ ●とにかく、シンプルに西暦と和暦を同時に表示します。 ●簡易電卓機能があります。 ●アプリを起動すれば、すぐに西暦と和暦が表示されます。 ●現在時刻も同時に表示します。 ●大きめのアナログ時計で、瞬時に現在時刻が分かります。 ●今日現在だけでなく、西暦から和暦に変換できます。  また同時に、何年前かも分かります。 使用シーン+++++++++++++++++++++++++ ●書類などを記入する際、和暦や西暦が必要な時に。 ●今日の日付を知りたい時に。 ●西暦から和暦に、変換したい時に。 ●西暦年から、今年が何年前かを、知りたい時に。 ●履歴を残したい計算をする時に。

Screenshots

Old Japanese Clock Lite3 screens
CalendarPlus4 screens

Verdict

The call

The clearest difference is iOS requirement: CalendarPlus at 12.0 against Old Japanese Clock Lite's 15.0. On price, update cadence, ads and in-app purchases 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

Old Japanese Clock Lite ships an update every 5 months, CalendarPlus every 3 months. Both last shipped on November 6, 2026.

Scorecard1 real difference · 9 level
Old Japanese Clock Lite versus CalendarPlus: the parameters behind the verdict, then further details
ParameterOld Japanese Clock LiteCalendarPlus
PriceFreeFree
Rating4.5 (4 ratings) — better—
Positive reviews81.8% of reviews—
Number of ratings4 — better—
Update frequencyEvery 5 monthsEvery 3 months — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size10 MB8 MB
Age rating4+4+
DeveloperTakafumi AMANOHISANORI KAMEYAMA

In-app purchases

None

Old Japanese Clock Lite

No in-app purchases

None

CalendarPlus

No in-app purchases

Questions

Is Old Japanese Clock Lite free?
Old Japanese Clock Lite is free to download, with no in-app purchases.
Is CalendarPlus free?
CalendarPlus is free to download, with no in-app purchases.
Do Old Japanese Clock Lite or CalendarPlus have ads?
Both Old Japanese Clock Lite and CalendarPlus show ads.
Which is updated more often, Old Japanese Clock Lite or CalendarPlus?
Old Japanese Clock Lite ships an update every 5 months, and CalendarPlus every 3 months. Most recently, Old Japanese Clock Lite was updated on November 6, 2026 and CalendarPlus on November 6, 2026.

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