# 突然の死 vs Ninja Fight Clock

The clearest difference is in-app purchases: 突然の死 at none against Ninja Fight Clock's 1. 突然の死 also leads on ads (none vs shown) and iOS requirement (11.4 vs 14.0). Ninja Fight Clock's advantage is update cadence (every 3 weeks vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Ninja Fight Clock sells 1 one-off in-app purchase. 突然の死 asks for nothing beyond the download.

突然の死 ships an update every 5 months, Ninja Fight Clock every 3 weeks. The most recent releases landed on November 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 突然の死 | Ninja Fight Clock |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Size | 4 MB | 25 MB |
| Requires iOS | **11.4** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Tadahisa Motooka](https://appshunter.io/developer/394580132) | [Mihoko Araki](https://appshunter.io/developer/1476136915) |

## What reviewers say

### 突然の死

[App page](https://appshunter.io/ios/app/id737765108)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is 突然の死 free?

突然の死 is free to download, with no in-app purchases.

### Is Ninja Fight Clock free?

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

### Do 突然の死 or Ninja Fight Clock have ads?

Ninja Fight Clock shows ads; 突然の死 does not.

### Which is updated more often, 突然の死 or Ninja Fight Clock?

突然の死 ships an update every 5 months, and Ninja Fight Clock every 3 weeks. Most recently, 突然の死 was updated on November 1, 2026 and Ninja Fight Clock on October 27, 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.*