# Planet simulation vs Puzzle Clock

The clearest difference is in-app purchases: Planet simulation at none against Puzzle Clock's 4. Planet simulation also leads on ratings volume (164 vs 21). Puzzle Clock's advantage is ads (none vs shown). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Puzzle Clock sells 4 one-off in-app purchases. Planet simulation asks for nothing beyond the download.

Puzzle Clock holds the better App Store score, 4.1 against 3.9. That said, the two scores are not equally well evidenced: Planet simulation has 164 ratings behind it against 21, so its average is the more settled of the two. Written reviews split almost evenly too, at 74% and 75% positive.

Planet simulation ships an update every 7 months, Puzzle Clock every 4 months. The most recent releases landed on September 19, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Planet simulation | Puzzle Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (164 ratings)](https://appshunter.io/ios/app/planet-simulation/id356146219/reviews) | **[4.1 (21 ratings)](https://appshunter.io/ios/app/puzzle-clock/id594207501/reviews)** |
| Number of ratings | **164** | 21 |
| Positive reviews | 74.3% of reviews | **75.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | Ad-supported | **Free** |
| Size | 15 MB | 14 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DAN-BALL](https://appshunter.io/developer/348592290) | [Oliver Klemenz](https://appshunter.io/developer/365360534) |

## 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


### Puzzle Clock

[App page](https://appshunter.io/ios/app/puzzle-clock/id594207501)

This game challenges you to set all nine clocks to 12 o'clock on both sides simultaneously. Manipulate four wheels and four buttons to control clock rotations and achieve the fastest time.

**Highlights:** Realistic 3D graphics, Sophisticated control mechanism, Multitouch support, Automatic shuffling and solving, Virtual Reality Camera mode, Gyrosensor support, Game Center for best times

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation of | $0.99 | one-time |
| Donation of | $1.99 | one-time |
| Donation of | $3.99 | one-time |
| Donation of | $5.99 | one-time |


## Frequently asked questions

### Is Planet simulation free?

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

### Is Puzzle Clock free?

Puzzle Clock is free to download, with in-app purchases available.

### Which has better reviews, Planet simulation or Puzzle Clock?

Puzzle Clock is rated higher. Planet simulation averages 3.9 out of 5 from 164 ratings, while Puzzle Clock averages 4.1 from 21 ratings.

### Do Planet simulation or Puzzle Clock have ads?

Planet simulation shows ads; Puzzle Clock does not.

### Which is updated more often, Planet simulation or Puzzle Clock?

Planet simulation ships an update every 7 months, and Puzzle Clock every 4 months. Most recently, Planet simulation was updated on September 19, 2026 and Puzzle Clock on September 6, 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.*