# One Kanji Clock vs Focus Flow：Green Focus

The clearest difference is ads: Focus Flow：Green Focus at none against One Kanji Clock's shown. One Kanji Clock's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price and in-app purchases there is nothing between them.

Both are free to download. One Kanji Clock sells 1 one-off in-app purchase and Focus Flow：Green Focus sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | One Kanji Clock | Focus Flow：Green Focus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Size | 18 MB | 4 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mihoko Araki](https://appshunter.io/developer/1476136915) | [Hong Kong Trillion Industrial Technology Group Limited](https://appshunter.io/developer/1761368993) |

## 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 |


### Focus Flow：Green Focus

[App page](https://appshunter.io/ios/app/focus-flowgreen-focus/id6758989266)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Max | $4.99 | per 7 days |
| Yearly Max | $39.99 | per year |


## Frequently asked questions

### Is One Kanji Clock free?

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

### Is Focus Flow：Green Focus free?

Focus Flow：Green Focus is free to download, with in-app purchases available.

### Do One Kanji Clock or Focus Flow：Green Focus have ads?

One Kanji Clock shows ads; Focus Flow：Green Focus does not.

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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.*