# Otherworldly Zombies vs RollingFlagBall

The clearest difference is in-app purchases: Otherworldly Zombies at none against RollingFlagBall's 2. Otherworldly Zombies also leads on ads (none vs shown) and iOS requirement (11.0 vs 13.0). On price, update cadence and device support there is nothing between them.

Both are free to download. RollingFlagBall sells 2 one-off in-app purchases. Otherworldly Zombies asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Otherworldly Zombies | RollingFlagBall |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | Every 4 days |
| Size | 101 MB | 152 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Osawa Shunsuke](https://appshunter.io/developer/477431394) | [Akina Kubota](https://appshunter.io/developer/988867741) |

## What reviewers say

### Otherworldly Zombies

[App page](https://appshunter.io/ios/app/otherworldly-zombies/id1512475701)

**In-app purchases:** none


### RollingFlagBall

[App page](https://appshunter.io/ios/app/rollingflagball/id6737237717)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AdRemove | $0.99 | one-time |
| AllAdRemove | $1.99 | one-time |


## Frequently asked questions

### Is Otherworldly Zombies free?

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

### Is RollingFlagBall free?

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

### Do Otherworldly Zombies or RollingFlagBall have ads?

RollingFlagBall shows ads; Otherworldly Zombies does not.

### Which is updated more often, Otherworldly Zombies or RollingFlagBall?

Otherworldly Zombies ships an update every 4 days, and RollingFlagBall every 4 days. Most recently, Otherworldly Zombies was updated on October 25, 2026 and RollingFlagBall 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.*