Cuckoo vs Cool Penguin Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cuckoo
This utility app simulates a cuckoo clock, chiming every hour and half-hour. Users can toggle the cuckoo sound on or off and customize alarm modes. Additional sounds and background images are available for purchase, along with an option to remove ads.
- Hourly and half-hourly cuckoo chimes
- Customizable alarm modes
- Add-on purchases for sounds and backgrounds
- Ad removal option
- Toggleable cuckoo sound
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This is "Cuckoo Clock". When this app running, Cuckoo sing every hour and every 30minutes. When you want hear Cuckoo Singing, press the switch button inside of bottom.Cuckoo Singing about 30 Hour. If you don't need Cuckoo, please switch off again. You can change Alarm mode and Custom. And can buy add-on for additional sounds, background images also remove Ad. App URL scheme is: cuckoo://
Cool Penguin Clock
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How about a cool penguin clock for the hot summer? You can choose from 20 different pictures of penguins. You can move the time text, analog clock, and penguin with your fingers. The analog clock and penguin can be zoomed in and out with two fingers. Seconds can also be displayed. Background color can be selected from 5 different colors. The year, month, day of the week, a.m./p.m., and seconds can be erased by touching them. Touching the time character switches to setting mode. When in setting mode, touch to change the year, month, and date to various formats. You can also switch between 12-hour and 24-hour displays. Screen rotation in portrait and landscape mode is also supported. By pressing buttons such as "2X" and "3X," the font size can be adjusted in steps. The time signal can be selected from 78 different tones.
Screenshots
Verdict
The clearest difference is update cadence: Cool Penguin Clock at every 3 weeks against Cuckoo's every 3 months. Cool Penguin Clock also leads on iOS requirement (12.0 vs 17.6). 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. Cuckoo sells 1 one-off in-app purchase and Cool Penguin Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Cuckoo ships an update every 3 months, Cool Penguin Clock every 3 weeks. The most recent releases landed on October 9, 2026 and September 30, 2026 respectively.
| Parameter | Cuckoo | Cool Penguin Clock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (16 ratings) — better | — |
| Positive reviews | 68.0% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 42 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Toshihiko Tambo | Mihoko Araki |
In-app purchases
Cuckoo
- Cuckoo Premium Feature$0.99
Cool Penguin Clock
- Penguin Clock with no ads$1.99
Questions
Is Cuckoo free?
Is Cool Penguin Clock free?
Do Cuckoo or Cool Penguin Clock have ads?
Which is updated more often, Cuckoo or Cool Penguin Clock?
Other comparisons
