Comparison

OneHandClock vs CalendarPlus

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

Head to head
About

OneHandClock

Experience a unique approach to timekeeping with a minimalist, single-hand clock. Customize backgrounds with your photos or camera, and choose between 12 or 24-hour formats with 10-minute increments. A three-hand option with a smooth second hand is also available.

Highlights
  • Single-hand clock display
  • 24-hour and 12-hour formats
  • 10-minute scale divisions
  • Optional second hand
  • Customizable clock position and size
  • Camera or photo backgrounds
  • Character customization on dial
Features
Read full description

This is a one needle clock. Let's feel the passage of calm time. - One-stitch clock   -> 24-hour clock.     The day-time is an upper half and the night-time is a lower half.   -> 12-hour clock.   -> The smallest scale division is 10 minutes. - Three-stitch clock   - > The second hand is a clock which gains smoothly. - You can change the position and size of the clock. - You can choose a camera image or a photo as the background of the clock. - Please write a favorite character in a dial and make it your clock. - If it puts sideways, a status bar will not be displayed. - When continuing displaying in "Auto sleep"-off, we recommend you to connect with a power supply. There is a paid version "oneHandClock (Pro version)" that does not display advertisements.

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

OneHandClock4 screens
CalendarPlus4 screens

Verdict

The call

The clearest difference is update cadence: CalendarPlus at every 3 months against OneHandClock's every 26 months. CalendarPlus also leads on iOS requirement (12.0 vs 15.0). 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

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

OneHandClock ships an update every 26 months, CalendarPlus every 3 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 8 level
OneHandClock versus CalendarPlus: the parameters behind the verdict, then further details
ParameterOneHandClockCalendarPlus
PriceFreeFree
Rating4.6 (5 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings5 — better—
Update frequencyEvery 26 monthsEvery 3 months — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size8 MB8 MB
Age rating4+4+
DeveloperKeietsu YasuharaHISANORI KAMEYAMA

In-app purchases

None

OneHandClock

No in-app purchases

None

CalendarPlus

No in-app purchases

Questions

Is OneHandClock free?
OneHandClock is free to download, with no in-app purchases.
Is CalendarPlus free?
CalendarPlus is free to download, with no in-app purchases.
Do OneHandClock or CalendarPlus have ads?
Both OneHandClock and CalendarPlus show ads.
Which is updated more often, OneHandClock or CalendarPlus?
OneHandClock ships an update every 26 months, and CalendarPlus every 3 months. Most recently, OneHandClock was updated on November 1, 2026 and CalendarPlus on November 6, 2026.

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