Comparison

Clock Challenge vs Nanzoo Clock

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Clock Challenge

Features
Read full description

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.

About

Nanzoo Clock

This educational app teaches children aged 3-7 how to tell time using interactive clock activities. Users can select animal clocks and practice setting and reading time with adjustable difficulty levels.

Highlights
  • Interactive animal clocks
  • Set the time activity
  • Read the time activity
  • Adjustable difficulty levels
  • Parent gate for purchases
  • No ads or tracking
Read full description

Nanzoo Clock is a clock-learning app that helps children practice reading and setting the time in a fun way. Choose your favorite animal, and it becomes a clock. Children can learn step by step with the hour hand, minute hand, clock face, numbers, and voice guidance. Recommended for children around ages 3 to 7. Supports five languages β€’ App text and time voice guidance are available in Japanese, English, Korean, Spanish, and Portuguese. β€’ You can change the app display language from the settings screen. β€’ It can be used at home or as a gentle way to experience another language. Start with your favorite animal! β€’ Choose from a lion, frog, or rabbit. β€’ The animal you choose appears as a clock. β€’ Friendly animals make learning the clock feel fun and approachable. Practice with two activities! β€’ β€œSet the Time” lets children adjust the clock to match the displayed time. β€’ Move the minute hand by dragging it, or use the plus and minus buttons. β€’ β€œRead the Time” lets children read the time shown by the clock hands. β€’ Tap the time numbers or use the plus and minus buttons to change the answer. β€’ Tap the solve button to check the answer. Step up with levels! β€’ Easy mode is free to play. Practice with times that move in 5-minute steps. β€’ Normal mode lets children practice more precisely with 1-minute steps. β€’ Challenge mode hides the helper marks on the clock face for a more advanced exercise. β€’ Normal and Challenge modes can be unlocked with a one-time in-app purchase. Designed for children and families β€’ No ads. β€’ No account registration. β€’ No third-party tracking. β€’ The purchase screen is placed behind a parental gate. β€’ The in-app purchase is a one-time purchase that unlocks Normal and Challenge modes.

Screenshots

Clock Challenge4 screens
Nanzoo Clock4 screens

Verdict

The call

The clearest difference is price: Nanzoo Clock at Free against Clock Challenge's $0.99. Nanzoo Clock also leads on update cadence (every 10 days vs every 15 months). Clock Challenge's advantage is in-app purchases (none vs 1) and device support. On iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Nanzoo Clock is free to download; Clock Challenge costs $0.99 up front. Nanzoo Clock sells 1 one-off in-app purchase. Clock Challenge asks for nothing beyond the download.

UpkeepUpdate frequency

Clock Challenge ships an update every 15 months, Nanzoo Clock every 10 days. The most recent releases landed on September 10, 2026 and June 29, 2026 respectively.

Scorecard4 real differences Β· 4 level
Clock Challenge versus Nanzoo Clock: the parameters behind the verdict, then further details
ParameterClock ChallengeNanzoo Clock
Price$0.99Free β€” better
Positive reviewsβ€”100.0% of reviews
Update frequencyEvery 15 monthsEvery 10 days β€” better
AdsNoβ€”
In-app purchasesNo β€” betterYes
Monetizationβ€”Free with in-app purchases
DevicesiPhone, iPad, iPod β€” betterβ€”
Requires iOS14.213.0 β€” better
Further details β€” not scored
Size59 MB38 MB
Age rating4+4+
DeveloperJariya TuantranontTakafumi Sasaki

In-app purchases

None

Clock Challenge

No in-app purchases

1 purchases

Nanzoo Clock

One-time1
  • Level Unlock$0.99

Questions

Is Clock Challenge free?
Clock Challenge costs $0.99, with no in-app purchases.
Is Nanzoo Clock free?
Nanzoo Clock is free to download, with in-app purchases available.
Which is updated more often, Clock Challenge or Nanzoo Clock?
Clock Challenge ships an update every 15 months, and Nanzoo Clock every 10 days. Most recently, Clock Challenge was updated on September 10, 2026 and Nanzoo Clock on June 29, 2026.

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