# Nanzoo Clock vs Smart Clocks

The clearest difference is in-app purchases: Smart Clocks at none against Nanzoo Clock's 1. Smart Clocks also leads on device support. Nanzoo Clock's advantage is update cadence (every 10 days vs every 4 weeks). On price and iOS requirement there is nothing between them.

Both are free to download. Nanzoo Clock sells 1 one-off in-app purchase. Smart Clocks asks for nothing beyond the download.

Nanzoo Clock ships an update every 10 days, Smart Clocks every 4 weeks. The most recent releases landed on October 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Nanzoo Clock | Smart Clocks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-clocks/id6608968019/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | **Every 10 days** | Every 4 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 38 MB | 86 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Takafumi Sasaki](https://appshunter.io/developer/625986968) | [Yan Xu](https://appshunter.io/developer/1503643654) |

## What reviewers say

### Nanzoo Clock

[App page](https://appshunter.io/ios/app/nanzoo-clock/id625986965)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Level Unlock | $0.99 | one-time |


### Smart Clocks

[App page](https://appshunter.io/ios/app/smart-clocks/id6608968019)

This educational app helps children learn about clocks and time through interactive exercises. It features engaging activities for practicing time-telling, writing, and understanding time intervals with voice and text instructions.

**Highlights:** Observe time changes with interactive hands, Practice writing time from clock indications, Draw clock hands from digital displays, Calculate time before or after a given period, Determine time between two clock indications, Text and voice instructions for all modules, Animation demonstrations of clocks

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nanzoo Clock free?

Nanzoo Clock is free to download, with in-app purchases available.

### Is Smart Clocks free?

Smart Clocks is free to download, with no in-app purchases.

### Which is updated more often, Nanzoo Clock or Smart Clocks?

Nanzoo Clock ships an update every 10 days, and Smart Clocks every 4 weeks. Most recently, Nanzoo Clock was updated on October 1, 2026 and Smart Clocks on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*