# Ninja Fight Clock vs 年齢･干支計算機

The clearest difference is in-app purchases: 年齢･干支計算機 at none against Ninja Fight Clock's 1. Ninja Fight Clock's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Ninja Fight Clock sells 1 one-off in-app purchase. 年齢･干支計算機 asks for nothing beyond the download.

Ninja Fight Clock ships an update every 3 weeks, 年齢･干支計算機 every 2 months. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Ninja Fight Clock | 年齢･干支計算機 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 25 MB | 7 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Mihoko Araki](https://appshunter.io/developer/1476136915) | [Takao Ichimura](https://appshunter.io/developer/1474061593) |

## What reviewers say

### Ninja Fight Clock

[App page](https://appshunter.io/ios/app/ninja-fight-clock/id6461210488)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ninja Fight Clock with no ads | $2.99 | one-time |


### 年齢･干支計算機

[App page](https://appshunter.io/ios/app/id6464290003)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ninja Fight Clock free?

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

### Is 年齢･干支計算機 free?

年齢･干支計算機 is free to download, with no in-app purchases.

### Do Ninja Fight Clock or 年齢･干支計算機 have ads?

Both Ninja Fight Clock and 年齢･干支計算機 show ads.

### Which is updated more often, Ninja Fight Clock or 年齢･干支計算機?

Ninja Fight Clock ships an update every 3 weeks, and 年齢･干支計算機 every 2 months. Most recently, Ninja Fight Clock was updated on October 19, 2026 and 年齢･干支計算機 on October 11, 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.*