# Ninja Sekai vs Robo Attack for Watch

The clearest difference is chart position: Ninja Sekai at #172 against Robo Attack for Watch's unranked. Ninja Sekai also leads on iOS requirement (12.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Ninja Sekai costs $1.99 and Robo Attack for Watch $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly daily. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ninja Sekai | Robo Attack for Watch |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/robo-attack-for-watch/id6746085350/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Daily | Daily |
| Monetization | — | Paid |
| Best chart rank | **#172** | — |
| Size | 380 MB | 25 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kyran Amantay](https://appshunter.io/developer/1757717130) | [Red Sprite Studios](https://appshunter.io/developer/493770851) |

## What reviewers say

### Ninja Sekai

[App page](https://appshunter.io/ios/app/ninja-sekai/id6736591745)

**Currently charting:** #172 Top Paid · Role Playing (US App Store)

**Features:** macOS Compatibility

**In-app purchases:** none


### Robo Attack for Watch

[App page](https://appshunter.io/ios/app/robo-attack-for-watch/id6746085350)

Engage in a fast-paced retro arcade shooter experience on your Apple Watch and iPhone. Blast through waves of rogue robots using classic pixel graphics and power-ups. Enjoy smooth performance and intuitive controls designed for quick bursts of gameplay.

**Highlights:** Retro arcade-style pixel graphics, Fast-paced enemy waves, Power-ups (Shield, Triple Shot, Rapid Fire, Time Freeze), Crown-based Watch controls, Short-burst gameplay, Offline play

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

**In-app purchases:** none


## Frequently asked questions

### Is Ninja Sekai free?

Ninja Sekai costs $1.99, with no in-app purchases.

### Is Robo Attack for Watch free?

Robo Attack for Watch costs $1.99, with no in-app purchases.

### Do Ninja Sekai or Robo Attack for Watch have ads?

Neither Ninja Sekai nor Robo Attack for Watch shows ads.

### Which is updated more often, Ninja Sekai or Robo Attack for Watch?

Ninja Sekai ships an update daily, and Robo Attack for Watch daily. Most recently, Ninja Sekai was updated on October 30, 2026 and Robo Attack for Watch on October 24, 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.*