# World Cities vs Just Pop Bubble

The clearest difference is in-app purchases: Just Pop Bubble at none against World Cities's 1. Just Pop Bubble also leads on update cadence (monthly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. World Cities sells 1 one-off in-app purchase. Just Pop Bubble asks for nothing beyond the download.

World Cities ships an update every 4 months, Just Pop Bubble monthly. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | World Cities | Just Pop Bubble |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | — | Ad-supported |
| Size | 39 MB | 55 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [James Riley](https://appshunter.io/developer/1258073294) | [takeshi ogawa](https://appshunter.io/developer/1676749157) |

## What reviewers say

### World Cities

[App page](https://appshunter.io/ios/app/world-cities/id1511303629)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Unlimited Games | $1.99 | one-time |


### Just Pop Bubble

[App page](https://appshunter.io/ios/app/just-pop-bubble/id6686403873)

Tap and pop bubbles in this engaging game. Choose between a relaxing endless mode or timed challenges to achieve high scores and compete globally. Relieve stress or test your speed and accuracy.

**Highlights:** Endless bubble popping, Timed challenge modes, High score competition, Global leaderboards, Stress relief gameplay

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

**In-app purchases:** none


## Frequently asked questions

### Is World Cities free?

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

### Is Just Pop Bubble free?

Just Pop Bubble is free to download, with no in-app purchases.

### Do World Cities or Just Pop Bubble have ads?

Both World Cities and Just Pop Bubble show ads.

### Which is updated more often, World Cities or Just Pop Bubble?

World Cities ships an update every 4 months, and Just Pop Bubble monthly. Most recently, World Cities was updated on October 10, 2026 and Just Pop Bubble on October 11, 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.*