OneHandClock vs aClocks
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.
aClocks
Display multiple analog clocks for cities worldwide. This app supports over 200 locations and observes daylight saving time and Japanese holidays with visual indicators. Choose from multiple languages for city and region names.
- Multiple analog clocks
- Over 200 cities worldwide
- Daylight saving time observation
- Japanese holiday notifications
- Multi-language support for city names
- Offline functionality
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aClocks is an iPhone-only iOS application. It lets you run multiple analog clocks at a time, covering more than 200 cities around the globe. aClocks observes day light saving time and Japanese holidays. If you have a clock that is under the day light saving time, then a clock will have a rotating, graphic notation at the top-left corner. - Features - 1. Run multiple analog clocks at a time. Scroll the middle view left to right or vice versa to locate a clock if you have two or more clocks. 2. Tap the name of a city at the bottom view to quickly locate the corresponding clock. 3. The app covers more than 200 cities around the globe. They are divided into 8 regions including Africa, Asia, Atlantic, Australia, Europe, North America, Pacific, South America. 4. The user can choose one of 18 area languages including English, Spanish, French, German, Italian, Portuguese, Danish, Dutch, Russian, Japanese, Korean, Chinese (Simplified), Chinese (Traditional), Vietnamese, Hebrew, Arabic, Turkish, Indonesia. The area language is responsible for showing the names of 8 areas and all 200+ city names in the selected language. 5. If a clock is under the day light saving time, a rotating, graphic notation appears at the top-left corner. 6. If the corresponding city of the clock is Japanese and the time is under a Japanese national holiday, a graphic notation will appear at the top-right corner of the clock. 7. The app prevents the user from installing multiple clocks from the same city. 8. There is no WiFi or WWAN required at any time to run the application. 9. Languages: English and Japanese only. 10.Application file size: 31.7 MB. - System requirements - 1. iOS 9.0 or above 2. iPhone 4S, iPhone 5, iPhone 5S, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S, iPhone 7, iPhone 7 Plus, iPhone SE, iPod Touch. - Limitations - 1. aClocks allows the user to create as many as two clocks at a time if they choose to use it as freeware. 2. aClocks may be deprived of promised features if the device is jailbroken. 3. As you create more and more clocks, memory consumption will increase. For example, if you run 25 clocks at a time with iPhone 5, the app can require as much as 70 to 105 MB of memory with no known memory leak.
Screenshots
Verdict
The clearest difference is in-app purchases: OneHandClock at none against aClocks's 1. aClocks's advantage is ads (none vs shown) and update cadence (every 9 days vs every 26 months). On price 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. aClocks sells 1 one-off in-app purchase. OneHandClock asks for nothing beyond the download.
OneHandClock ships an update every 26 months, aClocks every 9 days. The most recent releases landed on August 17, 2026 and June 1, 2026 respectively.
| Parameter | OneHandClock | aClocks |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | — |
| Positive reviews | 85.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | — |
| Update frequency | Every 26 months | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Keietsu Yasuhara | Tomoyuki Okawa |
Customer experience
OneHandClock
aClocks
In-app purchases
OneHandClock
No in-app purchases
aClocks
- Unlimited clocks$0.99









