# Decima vs Ninja Fight Clock

The clearest difference is ads: Decima at none against Ninja Fight Clock's shown. Ninja Fight Clock's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (14.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Decima sells 1 one-off in-app purchase and Ninja Fight Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Decima ships an update every 2 months, Ninja Fight Clock every 3 weeks. The most recent releases landed on September 25, 2026 and July 29, 2026 respectively.

## The numbers

| Metric | Decima | Ninja Fight Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 12 MB | 25 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Krzysztof Pawlowski](https://appshunter.io/developer/1216003515) | [Mihoko Araki](https://appshunter.io/developer/1476136915) |

## What reviewers say

### Decima

[App page](https://appshunter.io/ios/app/decima/id1498371556)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The Manipulator | $0.99 | one-time |


### 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 Decima free?

Decima is free to download, with in-app purchases available.

### Is Ninja Fight Clock free?

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

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

Ninja Fight Clock shows ads; Decima does not.

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

Decima ships an update every 2 months, and Ninja Fight Clock every 3 weeks. Most recently, Decima was updated on September 25, 2026 and Ninja Fight Clock on July 29, 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.*