# Planet simulation vs Pet Rock 2

The clearest difference is rating: Planet simulation at 3.9 against Pet Rock 2's 3.4. Planet simulation also leads on monetization model (ad-supported vs paid) and review sentiment (74% vs 50%). Pet Rock 2's advantage is ads (none vs shown) and update cadence (every 10 days vs every 8 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Planet simulation holds the better App Store score, 3.9 against 3.4. Both are backed by a comparable volume of ratings — 165 and 48 respectively. Written reviews point the same way: 74% of Planet simulation's written reviews are positive against 50% of Pet Rock 2's.

Planet simulation ships an update every 8 months, Pet Rock 2 every 10 days. Both last shipped on October 22, 2026.

## The numbers

| Metric | Planet simulation | Pet Rock 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (165 ratings)](https://appshunter.io/ios/app/planet-simulation/id356146219/reviews)** | [3.4 (48 ratings)](https://appshunter.io/ios/app/pet-rock-2-planet-simulator/id1129806785/reviews) |
| Number of ratings | **165** | 48 |
| Positive reviews | **74.3% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 10 days** |
| Monetization | **Ad-supported** | Paid |
| Size | 15 MB | 350 MB |
| Requires iOS | 13.0 | **6.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DAN-BALL](https://appshunter.io/developer/348592290) | [Explorasaurus Studios Inc.](https://appshunter.io/developer/1506282619) |

## What reviewers say

### Planet simulation

[App page](https://appshunter.io/ios/app/planet-simulation/id356146219)

Design and build your own solar system with various stars. Explore the fascinating world of gravity and recreate celestial bodies. A relaxing game for your spare time.

**Highlights:** Create your own solar system, Simulate gravity, Design with various stars, Reproduce celestial bodies, Relaxing gameplay

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Realistic gravity simulation
- 👍 Fun to mess around with
- 🎨 Visually appealing
- 🤖 Good for learning about planetary motion

**What reviewers complain about**

- 🐛 Planets often crash into the sun
- 🔍 Limited features and customization options
- 📢 Distracting ads
- 🤯 Confusing controls and UI

**Reported bugs**

- Planets sometimes disappear or behave erratically
- App crashes or freezes occasionally
- Scaling and scrolling issues

**Requested features**

- Add more celestial objects (black holes, supernovas, etc.)
- Allow for more complex orbits and binary systems
- Implement a save/load feature for solar systems
- Add a tutorial or help section
- Integrate with educational resources on astronomy


### Pet Rock 2

[App page](https://appshunter.io/ios/app/pet-rock-2-planet-simulator/id1129806785)

Create and evolve unique exoplanets from a simple rock. Adjust orbital parameters, chemical composition, and bombard with celestial bodies to witness the development of diverse planetary environments, including the emergence of life. Save your creations and share breathtaking moments.

**Highlights:** Create unique exoplanets, Adjust orbital and chemical parameters, Simulate meteorite bombardments, Witness planet evolution and life development, In-depth planet stats, In-game screenshot feature, Time control for observation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Planet simulation free?

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

### Is Pet Rock 2 free?

Pet Rock 2 is free to download, with no in-app purchases.

### Which has better reviews, Planet simulation or Pet Rock 2?

Planet simulation is rated higher. Planet simulation averages 3.9 out of 5 from 165 ratings, while Pet Rock 2 averages 3.4 from 48 ratings.

### Do Planet simulation or Pet Rock 2 have ads?

Planet simulation shows ads; Pet Rock 2 does not.

### Which is updated more often, Planet simulation or Pet Rock 2?

Planet simulation ships an update every 8 months, and Pet Rock 2 every 10 days. Most recently, Planet simulation was updated on October 22, 2026 and Pet Rock 2 on October 22, 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.*