# o vs Crystara

The clearest difference is in-app purchases: Crystara at none against o's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. o sells 1 one-off in-app purchase. Crystara asks for nothing beyond the download.

## The numbers

| Metric | o | Crystara |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/o-o-o/id6504745074/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 7 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jury Shortki](https://appshunter.io/developer/295094305) | [ROKONTECH LLC](https://appshunter.io/developer/1347808056) |

## What reviewers say

### o

[App page](https://appshunter.io/ios/app/o-o-o/id6504745074)

Engage in a sci-fi adventure managing atomic synthesis reactions. Collect and combine atoms to create elements, conduct experiments, and build a warp tower to save the world. Utilize unique tools and catalysts in a captivating storyline.

**Highlights:** Manage atomic synthesis, Conduct experiments and research, Build a warp tower, Use catalysts and tools, Immersive sci-fi storyline, Easy controls

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Pile of Stars | $0.99 | one-time |


### Crystara

[App page](https://appshunter.io/ios/app/crystara/id6760728987)

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

**In-app purchases:** none


## Frequently asked questions

### Is o free?

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

### Is Crystara free?

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

### Do o or Crystara have ads?

Neither o nor Crystara shows ads.

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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.*