# Cometarium コメタリウム vs SkyLens Star

The clearest difference is update cadence: Cometarium コメタリウム at every 4 days against SkyLens Star's every 2 weeks. Cometarium コメタリウム also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Cometarium コメタリウム ships an update every 4 days, SkyLens Star every 2 weeks. The most recent releases landed on October 6, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Cometarium コメタリウム | SkyLens Star |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 11 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shinsuke Abe](https://appshunter.io/developer/6790818921) | [承宇 万](https://appshunter.io/developer/1467877310) |

## What reviewers say

### Cometarium コメタリウム

[App page](https://appshunter.io/ios/app/cometarium/id6801072934)

**Features:** Vision Pro support

**In-app purchases:** none


### SkyLens Star

[App page](https://appshunter.io/ios/app/skylens-star/id6803046382)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cometarium コメタリウム free?

Cometarium コメタリウム is free to download, with no in-app purchases.

### Is SkyLens Star free?

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

### Do Cometarium コメタリウム or SkyLens Star have ads?

Neither Cometarium コメタリウム nor SkyLens Star shows ads.

### Which is updated more often, Cometarium コメタリウム or SkyLens Star?

Cometarium コメタリウム ships an update every 4 days, and SkyLens Star every 2 weeks. Most recently, Cometarium コメタリウム was updated on October 6, 2026 and SkyLens Star 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.*