GroundZERO! vs Tropical fish oasis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GroundZERO!
Engage in a unique blend of rhythm and simulation gameplay. Launch missiles to achieve a global objective. Experience a distinctive approach to entertainment.
- Rhythm gameplay
- Simulation elements
- Missile launching mechanics
- Global extermination objective
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Launch missiles to exterminate mankind! Rhythm and simulation combined in one!
Tropical fish oasis
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Tropical fish are gracefully swimming in the warm sea. Please appreciate the performance of cute tropical fish. - If you touch the screen and move it downward, it will be reduced centering on the first touched point. - Touch the screen and move it upward to zoom closer to the first touched point. - By tapping two fingers at the same time, the viewpoint is switched between the horizontal viewpoint in the sea, the vertical viewpoint from the sea, and the dance viewpoint of the school of fish. However, if it is enlarged or reduced, it will return to the original display size. - To save battery, it will switch to low frame rate display after 10 minutes. It also mutes the sound of the waves. When you tap the screen, the high frame rate will be displayed as before and the sound of waves will come out. ** This app is developed under Unity Personal license.
Screenshots
Verdict
The clearest difference is price: GroundZERO! at Free against Tropical fish oasis's $0.99. GroundZERO! also leads on update cadence (every 8 days vs every 40 months) and iOS requirement (8.0 vs 11.0). Tropical fish oasis's advantage is in-app purchases (none vs 3). On 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
GroundZERO! is free to download; Tropical fish oasis costs $0.99 up front. GroundZERO! sells 3 one-off in-app purchases. Tropical fish oasis asks for nothing beyond the download.
GroundZERO! ships an update every 8 days, Tropical fish oasis every 40 months. Both last shipped on October 3, 2026.
| Parameter | GroundZERO! | Tropical fish oasis |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 2.3 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 8 days — better | Every 40 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 28 MB | 119 MB |
| Age rating | 12+ | 4+ |
| Developer | Ryo Shirakawa | HIROFUMI MARUO |
In-app purchases
GroundZERO!
- Gold Missile + 3$0.99
- Gold Missile + 7$1.99
- Gold Missile + 12$2.99
Tropical fish oasis
No in-app purchases
Questions
Is GroundZERO! free?
Is Tropical fish oasis free?
Do GroundZERO! or Tropical fish oasis have ads?
Which is updated more often, GroundZERO! or Tropical fish oasis?
Other comparisons
