Planet Gravity vs Flying Comet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Planet Gravity
Explore the gravitational pull of different celestial bodies. Watch pendulums swing and collide under varying gravitational forces, offering a unique physics simulation experience.
- Select different planets for unique gravity
- Observe pendulum collisions
- Physics-based simulation
- Educational planet facts
- Interactive entertainment
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Planet Gravity isn't just about gravity anymore. Select a planet to get a scrolling fact about that planet on the display. This app is a twist on the Newton’s cradle balance balls. The pendulum balls collide just like the real set and you can select other planets to use that planet’s gravity. How does the pendulum swing with different gravity? Even the Sun has gravity - see what it does to the motion of the pendulums (well they'd probably melt but you get the idea.....)
Flying Comet
Navigate a celestial body through challenging levels, avoiding obstacles and reaching the destination. Players can afford two crashes per level before needing to restart. Embark on a journey through numerous stages.
- Control a comet
- Avoid obstacles
- Reach destination
- Multiple levels
- Crash limit per level
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Control the comet, avoid all obstacles, fly to destination. Each level we are allow to crash twice, more than twice crash you need to play again. Many levels are waiting for you.
Screenshots
Verdict
The clearest difference is price: Planet Gravity at Free against Flying Comet's $3.49. Planet Gravity also leads on ads (none vs shown) and review sentiment (25% vs 0%). Flying Comet's advantage is iOS requirement (15.6 vs 17.6). On update cadence, in-app purchases 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
Planet Gravity is free to download; Flying Comet costs $3.49 up front. Neither carries in-app purchases, so what you see is what you pay.
Planet Gravity ships an update every 14 months, Flying Comet every 19 months. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.
| Parameter | Planet Gravity | Flying Comet |
|---|---|---|
| Price | Free — better | $3.49 |
| Rating | — | 4.5 (2 ratings) — better |
| Positive reviews | 25.0% of reviews — better | 0.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 14 months — better | Every 19 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.6 — better |
| Further details — not scored | ||
| Size | 5 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Niagara Mobile LLC | Oscar Tsang |
Customer experience
Planet Gravity
Flying Comet
In-app purchases
Planet Gravity
No in-app purchases
Flying Comet
No in-app purchases
Questions
Is Planet Gravity free?
Is Flying Comet free?
Do Planet Gravity or Flying Comet have ads?
Which is updated more often, Planet Gravity or Flying Comet?
Other comparisons
