Black Clock vs 20 Girls Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Black Clock
A straightforward analog clock application offering a clean and simple design. It displays time with classic hands on a dial, providing an uncluttered visual experience for users who prefer traditional timekeeping.
- Simple design
- Clean interface
- Analog display
- Classic clock hands
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- simple, clean, analog clock
20 Girls Clock
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This app is a digital & analog clock app featuring 20 girls. // how to operate // - The clock text, analog clock, and girl images can be moved with your finger. - You can also adjust the size of the letters by pressing buttons such as "1X" and "2X". - The analog clock and the image of the girl can be enlarged or reduced with two fingers. - You can switch between 12-hour and 24-hour displays. // setting mode // - Touching the clock character switches to the setting mode. - In setting mode, the date can be changed to various formats by touching it. - It can also sound a time signal at 0 minutes of every hour, and there are 78 different tones to choose from. // Background // - There are 30 backgrounds to choose from, and they can be set to change automatically every hour. - You can also set the background to change correspondingly in the evening and at night. // Miscellaneous // - Rotation of the screen in portrait and landscape mode is supported. - The girl's image changes between two different images every 10 minutes. These are the main functions and operations of this app. We hope you enjoy it!
Screenshots
Verdict
The clearest difference is price: 20 Girls Clock at Free against Black Clock's $4.99. 20 Girls Clock also leads on update cadence (fortnightly vs every 9 months). Black Clock's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement 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
20 Girls Clock is free to download; Black Clock costs $4.99 up front. 20 Girls Clock sells 1 one-off in-app purchase. Black Clock asks for nothing beyond the download.
Black Clock ships an update every 9 months, 20 Girls Clock fortnightly. Both last shipped on October 27, 2026.
| Parameter | Black Clock | 20 Girls Clock |
|---|---|---|
| Price | $4.99 | Free — better |
| Positive reviews | 57.1% of reviews | — |
| Update frequency | Every 9 months | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | MacMedia | Mihoko Araki |
In-app purchases
Black Clock
No in-app purchases
20 Girls Clock
- Girls Clock with no ads$1.99
