Cat Run! vs Purify the World
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Cat Run!
Guide a cute cat back to its family by tapping to jump. Master three-stage jumps to clear all levels. Enjoy a simple yet challenging game experience.
- Tap to jump
- Three-stage jump mechanic
- Clear all stages
- Cute cat character
- Simple controls
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可愛い猫を家族のもとに返してあげよう！ 操作は簡単、タップでジャンプ！ 3段ジャンプを駆使して目指せ全ステージクリア！
Purify the World
Survive a zombie-infested world by collecting DNA, developing a vaccine, and collaborating with other survivors. Your mission is to cleanse the contaminated land and rebuild society.
- Zombie DNA collection and study
- Vaccine creation and deployment
- Contaminated surface purification
- Cooperative survival gameplay
- Post-apocalyptic world exploration
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You must live in a world of devastation and zombies roaming the streets. You must collect and study zombie DNA, clean up the contaminated surface with a vaccine you create, and work with the few friends who are still alive to survive!
Screenshots
Verdict
The clearest difference is in-app purchases: Cat Run! at none against Purify the World's 7. Cat Run! also leads on update cadence (every 2 days vs every 6 weeks). Purify the World's advantage is review sentiment (25% vs 11%). 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. Purify the World sells 7 one-off in-app purchases. Cat Run! asks for nothing beyond the download.
Cat Run! ships an update every 2 days, Purify the World every 6 weeks. Both last shipped on October 24, 2026.
| Parameter | Cat Run! | Purify the World |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 11.1% of reviews | 25.0% of reviews — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days — better | Every 6 weeks |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 100 MB | 291 MB |
| Age rating | 4+ | 9+ |
| Developer | Risa Sasaki | Eureka Studio Inc. |
Customer experience
Cat Run!
Purify the World
Bugs and requests
Cat Run!
Reported bugs
5 issues- App crashes frequently
- Ads appear during gameplay and block controls
- Inaccurate hit detection (hit when not touched, not hit when touched)
- Game over on seemingly safe actions
- Ads that redirect to other apps unexpectedly
Requested features
8 requests- Reduce the number of advertisements
- Provide in-game tutorials or explanations
- Lower the difficulty of certain stages
- Improve hit detection and collision accuracy
- Fix game crashes
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- Make ads skippable or less intrusive
- Add checkpoints to difficult stages
- Clarify what are obstacles and what is background
Purify the World
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Cat Run!
No in-app purchases
Purify the World
- Handful of Tickets$1.99
- World Pack 1$2.99
- Remove Ads$3.99
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- Bundle of Tickets$4.99
- World Pack 1 - Before Discount$9.99
- Stack of Tickets$14.99
- Mountain of Tickets$49.99
Questions
Is Cat Run! free?
Is Purify the World free?
Do Cat Run! or Purify the World have ads?
Which is updated more often, Cat Run! or Purify the World?
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