Drop Master! vs Purify the World
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Drop Master!
Guide the ball to the goal with simple tap controls. Master the timing to overcome surprisingly challenging levels. This game tests your skills and is perfect for those seeking a brain-teasing experience.
- Simple tap controls
- Timing-based gameplay
- Challenging levels
- Goal-oriented progression
- Brain-teasing puzzles
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ボールをゴールへ導け！ 操作は簡単、タイミングを合わせてタップするだけ！ 簡単なようで意外と難しい！ 天才の挑戦求む
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: Drop Master! at none against Purify the World's 7. Drop Master! also leads on review sentiment (33% vs 25%). On price, update cadence, ads and device support 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. Drop Master! asks for nothing beyond the download.
Drop Master! ships an update every 2 months, Purify the World every 5 weeks. The most recent releases landed on June 4, 2026 and September 3, 2026 respectively.
| Parameter | Drop Master! | Purify the World |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 33.3% of reviews — better | 25.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| 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 | 85 MB | 301 MB |
| Age rating | 4+ | 9+ |
| Developer | Basement Apps, Inc. | Eureka Studio Inc. |
Customer experience
Drop Master!
Purify the World
In-app purchases
Drop Master!
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 Drop Master! free?
Is Purify the World free?
Do Drop Master! or Purify the World have ads?
Which is updated more often, Drop Master! or Purify the World?
Other comparisons
