Kuku Robo vs Clock Challenge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kuku Robo
Master multiplication with a Japanese method called 'Kuku'. This app offers various levels ('Dan') to practice and improve your math skills. It's designed for consistent effort to build a strong foundation in mathematics.
- Learn Kuku multiplication method
- Practice with different 'Dan' levels
- Improve math skills
- Track progress through practice
- Designed for consistent effort
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Let’s learn the multiplication method called 'Kuku'. This is the secret why Japanese guys have a good track record of mathematics. It's important to keep trying on the Kuku, so this app is for you. You can choose several rows called 'Dan' as you like. Have fun with Kuku!
Clock Challenge
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Clock Challenge is a great app for kindergarten to 2nd grade children to learn and practice telling time. Your child will learn how to tell time on analogue clocks in various ways using minutes past/after, minutes to/before and quarter past/to. In Telling Time and Long Hand Quiz, your child will compete against a gopher in reading the clock. With every incorrect answer, the gopher gets points. In Clock Challenge, the egg will hatch and grow as their score goes up. Also, a bonus egg is included to encourage your child to practice more. This is a fun game to improve your child's time telling skills. **Plus a play history report and setup option for a parent or teacher to control the level of difficulty (i.e, setup to ask a question only hours, half an hour, quarters or nearest 5 minutes), setup to show minutes (0,5,10,15,…55) on the clock face and customize the number of questions and number of tries to match your child's level. **All words have been recorded by professional voice talent. *** If you have any questions or problems related to our app, please email us at playsmart.kids@gmail.com. We are willing to assist you.
Screenshots
Verdict
The clearest difference is price: Kuku Robo at Free against Clock Challenge's $0.99. Kuku Robo also leads on update cadence (every 3 months vs every 15 months). Clock Challenge's advantage is ads (none vs shown). On in-app purchases, 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
Kuku Robo is free to download; Clock Challenge costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Kuku Robo ships an update every 3 months, Clock Challenge every 15 months. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.
| Parameter | Kuku Robo | Clock Challenge |
|---|---|---|
| Price | Free — better | $0.99 |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 3 months — better | Every 15 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.2 — better |
| Further details — not scored | ||
| Size | 57 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | MASAHIRO MIZUTANI | Jariya Tuantranont |
In-app purchases
Kuku Robo
No in-app purchases
Clock Challenge
No in-app purchases
Questions
Is Kuku Robo free?
Is Clock Challenge free?
Do Kuku Robo or Clock Challenge have ads?
Which is updated more often, Kuku Robo or Clock Challenge?
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