# Ninja Fight Clock vs HourHack

The clearest difference is in-app purchases: HourHack at none against Ninja Fight Clock's 1. HourHack 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. Ninja Fight Clock sells 1 one-off in-app purchase. HourHack asks for nothing beyond the download.

Ninja Fight Clock ships an update every 3 weeks, HourHack fortnightly. The most recent releases landed on September 14, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Ninja Fight Clock | HourHack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (10 ratings)](https://appshunter.io/ios/app/hourhack/id6503925079/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | — | Free |
| Size | 25 MB | 21 MB |
| Requires iOS | 14.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Mihoko Araki](https://appshunter.io/developer/1476136915) | [Rosenbergs LLC](https://appshunter.io/developer/1716179267) |

## 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 |


### HourHack

[App page](https://appshunter.io/ios/app/hourhack/id6503925079)

Easily calculate the duration between two specific times or dates. Get instant results in hours, minutes, or days with a clear and intuitive interface. Simplify all your time-related calculations.

**Highlights:** Calculate time differences, Calculate date differences, Instant results, Clear interface, Time unit conversion

**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 HourHack free?

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

### Do Ninja Fight Clock or HourHack have ads?

Ninja Fight Clock shows ads; HourHack does not.

### Which is updated more often, Ninja Fight Clock or HourHack?

Ninja Fight Clock ships an update every 3 weeks, and HourHack fortnightly. Most recently, Ninja Fight Clock was updated on September 14, 2026 and HourHack on September 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.*