# One Kanji Clock vs Klapklok

The clearest difference is in-app purchases: Klapklok at none against One Kanji Clock's 1. Klapklok also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. One Kanji Clock sells 1 one-off in-app purchase. Klapklok asks for nothing beyond the download.

One Kanji Clock ships an update every 2 months, Klapklok monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | One Kanji Clock | Klapklok |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/klapklok/id6738840401/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free |
| Size | 18 MB | 4 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mihoko Araki](https://appshunter.io/developer/1476136915) | [Miniot B.V.](https://appshunter.io/developer/1782527973) |

## What reviewers say

### One Kanji Clock

[App page](https://appshunter.io/ios/app/one-kanji-clock/id6468893847)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Kanji Clock with no ads | $2.99 | one-time |


### Klapklok

[App page](https://appshunter.io/ios/app/klapklok/id6738840401)

Interface with a smart device via Bluetooth to set its time and cycle through various demo modes. Users can also draw custom images directly on the device's display and save them for later recall.

**Highlights:** Bluetooth interface, Set device time, Cycle through demo modes, Draw on display, Save and recall images

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One Kanji Clock free?

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

### Is Klapklok free?

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

### Do One Kanji Clock or Klapklok have ads?

One Kanji Clock shows ads; Klapklok does not.

### Which is updated more often, One Kanji Clock or Klapklok?

One Kanji Clock ships an update every 2 months, and Klapklok monthly. Most recently, One Kanji Clock was updated on November 3, 2026 and Klapklok on November 4, 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.*