# Planet simulation vs Circle Run

The clearest difference is rating: Circle Run at 5.0 against Planet simulation's 3.9. Circle Run also leads on review sentiment (100% vs 74%). Planet simulation's advantage is in-app purchases (none vs 1) and update cadence (every 8 months vs every 137 months). On price and iOS requirement there is nothing between them.

Both are free to download. Circle Run sells 1 one-off in-app purchase. Planet simulation asks for nothing beyond the download.

Circle Run holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Planet simulation has 165 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 74% of Planet simulation's written reviews are positive against 100% of Circle Run's.

Planet simulation ships an update every 8 months, Circle Run every 137 months. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Planet simulation | Circle Run |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (165 ratings)](https://appshunter.io/ios/app/planet-simulation/id356146219/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/circle-run-endless-relaxation/id953971184/reviews)** |
| Number of ratings | **165** | 1 |
| Positive reviews | 74.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | — |
| Update frequency | **Every 8 months** | Every 137 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 15 MB | 36 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [DAN-BALL](https://appshunter.io/developer/348592290) | [omytap](https://appshunter.io/developer/910138297) |

## 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


### Circle Run

[App page](https://appshunter.io/ios/app/circle-run-endless-relaxation/id953971184)

A relaxing one-tap game where you guide a sphere across floating tiles. Enjoy a calming experience with no timers or pressure, set to ambient music and beautiful visual themes. Relieve stress and find your rhythm.

**Highlights:** One-tap gameplay, Stress relief mechanics, Multiple wellness themes, Ambient soundtrack, No timers or enemies, Score tracking

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Planet simulation free?

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

### Is Circle Run free?

Circle Run is free to download, with in-app purchases available.

### Which has better reviews, Planet simulation or Circle Run?

Circle Run is rated higher. Planet simulation averages 3.9 out of 5 from 165 ratings, while Circle Run averages 5.0 from 1 ratings.

### Which is updated more often, Planet simulation or Circle Run?

Planet simulation ships an update every 8 months, and Circle Run every 137 months. Most recently, Planet simulation was updated on October 9, 2026 and Circle Run on October 2, 2026.

---

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