CalendarWatch vs OneHandClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalendarWatch
This app combines a calendar and a watch to display your appointments alongside the current time. It offers an appealing, customizable design and allows for direct editing and adding of events. Navigate easily through days and weeks with an intuitive interface.
- Combined time and appointment display
- Appealing, customizable user interface
- Direct appointment editing and adding
- Intuitive navigation through days/weeks
- Synchronization with smartphone calendar
Read full descriptionHide full description
With this perfect combination of a calendar and a watch you can easily keep an eye on your appointments. CalendarWatch simultaneously displays the current time of day and all your personal appointments on your smartphone– in an appealing, individual design. How it works: CalendarWatch is synchronized with your smartphone’s standard calendar so appointments are shown directly on the interface of the watch. The design of the smart 24-hour time circle is highly appealing: new appointments can be added and existing ones edited or deleted. This intuitive operation allows you to easily swipe through the following weekdays and calendar weeks. Features: - Combined display of current time and appointments - Pleasant user interface with individual operation - Direct editing and adding of appointments - Simple navigation through days and calendar weeks
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
Read full descriptionHide 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.
Screenshots
Verdict
The clearest difference is rating: OneHandClock at 4.6 against CalendarWatch's 4.0. OneHandClock also leads on ratings volume (5 vs 1). CalendarWatch's advantage is ads (none vs shown) and review sentiment (100% vs 86%). On price, update cadence, 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 holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: OneHandClock has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of CalendarWatch's written reviews are positive against 86% of OneHandClock's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 26 months. The most recent releases landed on October 17, 2026 and October 14, 2026 respectively.
| Parameter | CalendarWatch | OneHandClock |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 4.6 (5 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 85.7% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 26 months | Every 26 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 5.1.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | denkwerk GmbH | Keietsu Yasuhara |
Customer experience
CalendarWatch
OneHandClock
In-app purchases
CalendarWatch
No in-app purchases
OneHandClock
No in-app purchases
