# Smart Clocks vs KnowClock

The clearest difference is in-app purchases: Smart Clocks at none against KnowClock's 3. Smart Clocks also leads on iOS requirement (12.0 vs 16.0). KnowClock's advantage is update cadence (every 11 days vs every 4 weeks). On price, ads and device support there is nothing between them.

Both are free to download. KnowClock sells 3 in-app purchases, starting at $0.99 per month. Smart Clocks asks for nothing beyond the download.

Smart Clocks ships an update every 4 weeks, KnowClock every 11 days. The most recent releases landed on September 19, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Smart Clocks | KnowClock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-clocks/id6608968019/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 11 days** |
| Monetization | Free | — |
| Size | 86 MB | 8 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yan Xu](https://appshunter.io/developer/1503643654) | [中周 王](https://appshunter.io/developer/1611287450) |

## What reviewers say

### 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


### KnowClock

[App page](https://appshunter.io/ios/app/knowclock-kids-clock/id6765656447)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月订阅 | $0.99 | per month |
| 年订阅 | $1.99 | per year |
| 终身解锁 | $2.99 | one-time |


## Frequently asked questions

### Is Smart Clocks free?

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

### Is KnowClock free?

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

### Do Smart Clocks or KnowClock have ads?

Neither Smart Clocks nor KnowClock shows ads.

### Which is updated more often, Smart Clocks or KnowClock?

Smart Clocks ships an update every 4 weeks, and KnowClock every 11 days. Most recently, Smart Clocks was updated on September 19, 2026 and KnowClock on September 23, 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.*