Nanzoo Clock vs Is That an Earthquake?
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Interactive animal clocks
- Set the time activity
- Read the time activity
- Adjustable difficulty levels
- Parent gate for purchases
- No ads or tracking
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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 • App text and time voice guidance are available in Japanese, English, Korean, Spanish, and Portuguese. • You can change the app display language from the settings screen. • It can be used at home or as a gentle way to experience another language. Start with your favorite animal! • Choose from a lion, frog, or rabbit. • The animal you choose appears as a clock. • Friendly animals make learning the clock feel fun and approachable. Practice with two activities! • “Set the Time” lets children adjust the clock to match the displayed time. • Move the minute hand by dragging it, or use the plus and minus buttons. • “Read the Time” lets children read the time shown by the clock hands. • Tap the time numbers or use the plus and minus buttons to change the answer. • Tap the solve button to check the answer. Step up with levels! • Easy mode is free to play. Practice with times that move in 5-minute steps. • Normal mode lets children practice more precisely with 1-minute steps. • Challenge mode hides the helper marks on the clock face for a more advanced exercise. • Normal and Challenge modes can be unlocked with a one-time in-app purchase. Designed for children and families • No ads. • No account registration. • No third-party tracking. • The purchase screen is placed behind a parental gate. • The in-app purchase is a one-time purchase that unlocks Normal and Challenge modes.
Is That an Earthquake?
This interactive digital book tells the story of a child's anxiety about potential earthquakes and the real event. It features read-to-me, read-it-myself, and narration recording options, along with an earthquake safety guide.
- Swipe-to-Read™
- Touch-to-Hear™
- Touch-to-Spell™
- Read-to-me and read-it-yourself
- Record narration
- Color illustrations
- Earthquake safety guide
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Is That an Earthquake? by Alan Bagnall illustrated by Jennifer Cooper A young boy wonders anxiously whether the movements and noises around his home could be an earthquake, and then, suddenly an earthquake does happen. The story incorporates a recount and an explanation and is told entirely through dialogue. There are safety instructions inside the back cover. This app is intended as a New Zealand Sign Language resource. FEATURES: - Swipe-to-Read™ - Touch-to-Hear™ - Touch-to-Spell™ - Read-to-me and read-it-myself options - Record your narration - Colour in the illustrations - Animation and sound effects - A child-friendly user interface - Parent/Teacher notes - An earthquake safety guide This digital book contains text and audio in English and a video readthrough and vocabulary in NZSL NEED HELP? Contact us: support@kiwadigital.com KIWA® is the world’s leading production house for experiential digital books. We partner with publishers and other content owners, using our patented technology to bring content to life in revolutionary new digital formats that deepen your child’s engagement and understanding. Check out our website: www.kiwadigital.com Find us on Facebook: https://www.facebook.com/KiwaDigital
Screenshots
Verdict
The clearest difference is in-app purchases: Is That an Earthquake? at none against Nanzoo Clock's 1. Is That an Earthquake? also leads on device support. Nanzoo Clock's advantage is update cadence (every 10 days vs every 34 months). On price, review sentiment 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
Both are free to download. Nanzoo Clock sells 1 one-off in-app purchase. Is That an Earthquake? asks for nothing beyond the download.
Nanzoo Clock ships an update every 10 days, Is That an Earthquake? every 34 months. Both last shipped on November 1, 2026.
| Parameter | Nanzoo Clock | Is That an Earthquake? |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 10 days — better | Every 34 months |
| Ads | — | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | — | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 38 MB | 126 MB |
| Age rating | 4+ | 4+ |
| Developer | Takafumi Sasaki | Ministry of Education |
Customer experience
Nanzoo Clock
Is That an Earthquake?
In-app purchases
Nanzoo Clock
- Level Unlock$0.99
Is That an Earthquake?
No in-app purchases
Questions
Is Nanzoo Clock free?
Is Is That an Earthquake? free?
Which is updated more often, Nanzoo Clock or Is That an Earthquake??
Other comparisons
