World Cities vs Just Pop Bubble
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
World Cities
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Build your knowledge of countries and capital cities with separate Lesson and Quiz modes. Learn at your own pace, then put your memory, concentration and reaction speed to work in increasingly fast-paced quizzes. LEARN ABOUT 200 COUNTRIES Discover each country’s capital, continent, national flag, currency and geographic location, together with famous sites and country and city population facts. TWO WAYS TO PLAY • Lesson Mode: Explore the information at your own pace without a timer. • Quiz Mode: Answer questions against the clock. At higher levels, you have less time to answer each question but earn more points for every correct answer. CHOOSE YOUR LANGUAGE Change the app’s language without changing your device settings. Explore lessons and answer quiz questions in another supported language while learning about the world. LEVEL UP AND COMPETE Progress through nine levels in each region and earn points. Tap the Game Center button to open the worldwide leaderboard, see your ranking and view the best scores recorded by players around the world. INVITE YOUR FRIENDS Send friends a ready-made invitation and App Store link through email, messaging or another sharing app, then challenge them to play and compare scores.
Just Pop Bubble
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.
- Endless bubble popping
- Timed challenge modes
- High score competition
- Global leaderboards
- Stress relief gameplay
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Just Pop Bubble is a game where you endlessly tap and pop bubbles! There are two modes: one where you can pop bubbles mindlessly without any time limit to relieve stress, and another where you aim for a high score within a set time. 【Endless Mode】 A mode where you can pop bubbles endlessly without any time limit. 【30 Seconds Mode / 60 Seconds Mode】 In these modes, aim for a high score by popping as many bubbles as possible within the time limit. You can register your score and compete in the rankings with users from around the world based on scores registered in the last month!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | World Cities | Just Pop Bubble |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 4 months | Monthly — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 39 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | James Riley | takeshi ogawa |
In-app purchases
World Cities
- Buy Unlimited Games$1.99
Just Pop Bubble
No in-app purchases









