Planet Gravity vs 星语
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planet Gravity
Engage in a physics-based game simulating asteroid flight and solar system creation. Complete missions to explore the universe and pass the time. Discover other titles for freeform universe building.
- Physics-based gameplay
- Asteroid simulation
- Solar system creation
- Level-based missions
- Universe exploration
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"Planet Gravity" is a physical base game. We simulate asteroids flying over space. And create the solar system step by step. On each level, we will have some missions for you to finished. The goal of this game is increase your interesting on universe and helping you to the pass the time. And if you want to create the universe on your own freely, we have two games suggested to you. Find "myDream Universe" or "Sandbox Planet" on Appstore.
星语
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你可以把此APP当作一个记事本或者一个收音机. 在本APP中,你可以: -探索星空. -对不同的星星留言. -发布留言到宇宙中. -看到其他人的留言.
Screenshots
Verdict
The clearest difference is review sentiment: 星语 at 100% against Planet Gravity's 44%. 星语 also leads on rating (5.0 vs 4.2) and in-app purchases (none vs 1). Planet Gravity's advantage is ratings volume (54 vs 1). On price 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. Planet Gravity sells 1 one-off in-app purchase. 星语 asks for nothing beyond the download.
星语 holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Planet Gravity has 54 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 44% of Planet Gravity's written reviews are positive against 100% of 星语's.
Planet Gravity ships an update every 6 months, 星语 every 2 months. Both last shipped on November 3, 2026.
| Parameter | Planet Gravity | 星语 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (54 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 44.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 54 — better | 1 |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 129 MB | 213 MB |
| Age rating | 4+ | 4+ |
| Developer | Oscar Tsang | 雨恒 蔡 |
Customer experience
Planet Gravity
星语
In-app purchases
Planet Gravity
- Golden Pass$2.99
星语
No in-app purchases
