# Rock.io™ vs Killer Robot War

The clearest difference is iOS requirement: Rock.io™ at 8.2 against Killer Robot War's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rock.io™ ships an update every 2 weeks, Killer Robot War every 9 days. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Rock.io™ | Killer Robot War |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (15 ratings)](https://appshunter.io/ios/app/rockio/id1412000443/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 194 MB | 273 MB |
| Requires iOS | **8.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 17+ |
| Developer | [Geisha Tokyo Inc.](https://appshunter.io/developer/304321146) | [Hong Kong Rice Technology Co., Limited](https://appshunter.io/developer/1750679963) |

## What reviewers say

### Rock.io™

[App page](https://appshunter.io/ios/app/rockio/id1412000443)

Engage in a satisfying battle by smashing objects to grow your rock. Destroy opponents and break them into pieces to become the ultimate victor. The larger your rock gets, the more powerful it becomes.

**Highlights:** Smash objects to grow, Defeat other players, Rock grows with destruction, Destroy larger objects, Satisfying gameplay

**In-app purchases:** none


### Killer Robot War

[App page](https://appshunter.io/ios/app/killer-robot-war/id6504024476)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rock.io™ free?

Rock.io™ is free to download, with no in-app purchases.

### Is Killer Robot War free?

Killer Robot War is free to download, with no in-app purchases.

### Do Rock.io™ or Killer Robot War have ads?

Neither Rock.io™ nor Killer Robot War shows ads.

### Which is updated more often, Rock.io™ or Killer Robot War?

Rock.io™ ships an update every 2 weeks, and Killer Robot War every 9 days. Most recently, Rock.io™ was updated on October 24, 2026 and Killer Robot War on October 16, 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.*