# 星座早見 / Planisphere vs 星空ナビ

The clearest difference is rating: 星空ナビ at 4.7 against 星座早見 / Planisphere's 1.0. 星空ナビ also leads on review sentiment (29% vs 0%) and ratings volume (3 vs 1). 星座早見 / Planisphere's advantage is in-app purchases (none vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 星空ナビ sells 2 in-app purchases, starting at $1.49 per month. 星座早見 / Planisphere asks for nothing beyond the download.

星空ナビ holds the better App Store score, 4.7 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews point the same way: 0% of 星座早見 / Planisphere's written reviews are positive against 29% of 星空ナビ's.

星座早見 / Planisphere ships an update every 5 weeks, 星空ナビ every 6 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | 星座早見 / Planisphere | 星空ナビ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/planisphere/id882653086/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/id1437609381/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | 0.0% of reviews | **28.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 277 MB | 106 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IMAGE FACTORY CO., LTD.](https://appshunter.io/developer/882653089) | [AstroArts Inc.](https://appshunter.io/developer/293118838) |

## What reviewers say

### 星座早見 / Planisphere

[App page](https://appshunter.io/ios/app/planisphere/id882653086)

This app simulates the night sky, displaying stars, planets, and the moon. It functions like a traditional planisphere but with added digital features, allowing users to easily view celestial positions and predict sunrise/sunset times.

**Highlights:** Real-time sky display, Planet and moon tracking, Interactive sky map, Sunrise/sunset prediction, Zoomable interface, Dark-friendly screen

**In-app purchases:** none


### 星空ナビ

[App page](https://appshunter.io/ios/app/id1437609381)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 有料会員（１ヶ月） | $1.49 | per month |
| 有料会員（１年） | $13.99 | per year |


## Frequently asked questions

### Is 星座早見 / Planisphere free?

星座早見 / Planisphere is free to download, with no in-app purchases.

### Is 星空ナビ free?

星空ナビ is free to download, with in-app purchases available.

### Which has better reviews, 星座早見 / Planisphere or 星空ナビ?

星空ナビ is rated higher. 星座早見 / Planisphere averages 1.0 out of 5 from 1 ratings, while 星空ナビ averages 4.7 from 3 ratings.

### Do 星座早見 / Planisphere or 星空ナビ have ads?

Neither 星座早見 / Planisphere nor 星空ナビ shows ads.

### Which is updated more often, 星座早見 / Planisphere or 星空ナビ?

星座早見 / Planisphere ships an update every 5 weeks, and 星空ナビ every 6 weeks. Most recently, 星座早見 / Planisphere was updated on October 24, 2026 and 星空ナビ on October 24, 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.*