# Exoplanet vs 星座早見 / Planisphere

The clearest difference is review sentiment: Exoplanet at 91% against 星座早見 / Planisphere's 0%. Exoplanet also leads on rating (4.7 vs 1.0) and ratings volume (956 vs 1). 星座早見 / Planisphere's advantage is in-app purchases (none vs 7). On price, ads and device support there is nothing between them.

Both are free to download. Exoplanet sells 7 one-off in-app purchases. 星座早見 / Planisphere asks for nothing beyond the download.

Exoplanet holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Exoplanet has 956 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 91% of Exoplanet's written reviews are positive against 0% of 星座早見 / Planisphere's.

Exoplanet ships an update every 2 weeks, 星座早見 / Planisphere every 5 weeks. The most recent releases landed on September 21, 2026 and June 24, 2026 respectively.

## The numbers

| Metric | Exoplanet | 星座早見 / Planisphere |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (956 ratings)](https://appshunter.io/ios/app/exoplanet/id327702034/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/planisphere/id882653086/reviews) |
| Number of ratings | **956** | 1 |
| Positive reviews | **91.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 105 MB | 277 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hanno Rein](https://appshunter.io/developer/325840976) | [IMAGE FACTORY CO., LTD.](https://appshunter.io/developer/882653089) |

## What reviewers say

### Exoplanet

[App page](https://appshunter.io/ios/app/exoplanet/id327702034)

Explore a vast, interactive database of discovered exoplanets and their host stars. Visualize their physical properties, locations in the night sky, and orbital paths. Discover the observable universe from Earth to the cosmic microwave background with stunning 3D models and augmented reality features.

**Highlights:** Interactive visualizations and animations, Daily updated exoplanet and host star properties, 3D Milky Way model with exoplanet locations, Augmented reality sky map, Exoplanet orbit and habitable zone visualizations, Data from multiple exoplanet catalogs

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Galaxy Clusters and CMB | $0.99 | one-time |
| Asteroids | $0.99 | one-time |
| Gaia Stars | $0.99 | one-time |
| S-Stars | $0.99 | one-time |
| Catalogues | $0.99 | one-time |
| Developer Appreciation Coffee | $1.99 | one-time |
| Kepler Add-on | $2.99 | one-time |

**What reviewers like**

- 🚀 Great app
- 👍 Insanely entertaining
- 👍 Amazing graphics and interactive diorama
- 👍 Detailed explanation of planets
- 👍 Awesome app for astronomy and physics lovers

**What reviewers complain about**

- 🐛 Some exoplanets not showing up in search
- 🐛 Inconsistent behavior when switching between databases
- 🔒 Paid upgrades required to access more features
- 🐛 Upgrade purchase issues with Galaxy Clusters and CMB add-on
- 🐛 Exoplanets represented as generic white balls

**Reported bugs**

- Upgrade purchase issues with Galaxy Clusters and CMB add-on
- Kepler objects of interest disappearing when switching databases

**Requested features**

- Add more detailed textures and visuals for exoplanets
- Ability to view multiple databases simultaneously
- Option to see planet surfaces and atmospheres
- Inclusion of dwarf planets in our solar system
- Ability to zoom in on and explore other galaxies


### 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


## Frequently asked questions

### Is Exoplanet free?

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

### Is 星座早見 / Planisphere free?

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

### Which has better reviews, Exoplanet or 星座早見 / Planisphere?

Exoplanet is rated higher. Exoplanet averages 4.7 out of 5 from 956 ratings, while 星座早見 / Planisphere averages 1.0 from 1 ratings.

### Do Exoplanet or 星座早見 / Planisphere have ads?

Neither Exoplanet nor 星座早見 / Planisphere shows ads.

### Which is updated more often, Exoplanet or 星座早見 / Planisphere?

Exoplanet ships an update every 2 weeks, and 星座早見 / Planisphere every 5 weeks. Most recently, Exoplanet was updated on September 21, 2026 and 星座早見 / Planisphere on June 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.*