OneHandClock vs CalendarPlus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
CalendarPlus
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | OneHandClock | CalendarPlus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | — |
| Positive reviews | 85.7% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 26 months | Every 3 months — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Keietsu Yasuhara | HISANORI KAMEYAMA |
In-app purchases
OneHandClock
No in-app purchases
CalendarPlus
No in-app purchases









