# Boson X vs Crown Rivals

The clearest difference is price: Crown Rivals at Free against Boson X's $2.99. Crown Rivals also leads on update cadence (every 3 days vs every 6 months). Boson X's advantage is ads (none vs shown) and iOS requirement (9.3 vs 15.0). On in-app purchases and device support there is nothing between them.

Crown Rivals is free to download; Boson X costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Boson X ships an update every 6 months, Crown Rivals every 3 days. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Boson X | Crown Rivals |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.7 (104 ratings)](https://appshunter.io/ios/app/boson-x/id660600531/reviews)** | — |
| Number of ratings | **104** | — |
| Positive reviews | 83.2% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 22 MB | 181 MB |
| Requires iOS | **9.3** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Shape Shop Pty Ltd atf Shape Shop Trust](https://appshunter.io/developer/1790758342) | [羡龄 甄](https://appshunter.io/developer/1776613939) |

## What reviewers say

### Boson X

[App page](https://appshunter.io/ios/app/boson-x/id660600531)

Experience a fast-paced rotational runner set within a particle accelerator. Jump between Planck units, generate high-energy collisions, and discover new particles in a hazardous subatomic world. This game emphasizes precise timing and reflexes without in-app purchases or power-ups.

**Highlights:** Rotational runner gameplay, Particle accelerator setting, Quantum jumping mechanics, High-energy collision generation, Subatomic world navigation, Precise timing and reflexes required

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Beautiful graphics
- 🚀 Smooth gameplay
- 💡 Unique and challenging levels
- 🎮 Addictive and fun

**What reviewers complain about**

- 🐛 Lagging issues on newer devices
- 🔋 High battery consumption
- 🕹️ Unresponsive controls

**Reported bugs**

- Crashes on launch
- Aspect ratio issues on iPhone 5/6
- Laser spawning bug on later levels

**Requested features**

- More levels and content
- Difficulty settings
- Improved controls
- Cloud save support


### Crown Rivals

[App page](https://appshunter.io/ios/app/crown-rivals/id6780334857)

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

**In-app purchases:** none


## Frequently asked questions

### Is Boson X free?

Boson X costs $2.99, with no in-app purchases.

### Is Crown Rivals free?

Crown Rivals is free to download, with no in-app purchases.

### Do Boson X or Crown Rivals have ads?

Crown Rivals shows ads; Boson X does not.

### Which is updated more often, Boson X or Crown Rivals?

Boson X ships an update every 6 months, and Crown Rivals every 3 days. Most recently, Boson X was updated on November 11, 2026 and Crown Rivals on November 5, 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.*