# Planet Gravity vs Flying Comet

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.

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.

## The numbers

| Metric | Planet Gravity | Flying Comet |
| --- | --- | --- |
| Price | **Free** | $3.49 |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/flying-comet/id1434665607/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 14 months** | Every 19 months |
| Monetization | **Free** | Paid |
| Size | 5 MB | 77 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Niagara Mobile LLC](https://appshunter.io/developer/1039399999) | [Oscar Tsang](https://appshunter.io/developer/416987065) |

## What reviewers say

### Planet Gravity

[App page](https://appshunter.io/ios/app/planet-gravity/id995682820)

Explore the gravitational pull of different celestial bodies. Watch pendulums swing and collide under varying gravitational forces, offering a unique physics simulation experience.

**Highlights:** Select different planets for unique gravity, Observe pendulum collisions, Physics-based simulation, Educational planet facts, Interactive entertainment

**Features:** macOS Compatibility

**In-app purchases:** none


### Flying Comet

[App page](https://appshunter.io/ios/app/flying-comet/id1434665607)

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.

**Highlights:** Control a comet, Avoid obstacles, Reach destination, Multiple levels, Crash limit per level

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Planet Gravity free?

Planet Gravity is free to download, with no in-app purchases.

### Is Flying Comet free?

Flying Comet costs $3.49, with no in-app purchases.

### Do Planet Gravity or Flying Comet have ads?

Flying Comet shows ads; Planet Gravity does not.

### Which is updated more often, Planet Gravity or Flying Comet?

Planet Gravity ships an update every 14 months, and Flying Comet every 19 months. Most recently, Planet Gravity was updated on October 6, 2026 and Flying Comet on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*