# Intergalactic Solar System vs Black hole finder

The clearest difference is in-app purchases: Black hole finder at none against Intergalactic Solar System's 1. Black hole finder also leads on update cadence (every 10 days vs monthly). Intergalactic Solar System's advantage is ratings volume (25 vs 7). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Intergalactic Solar System sells 1 one-off in-app purchase. Black hole finder asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.0 for Intergalactic Solar System against 4.1 for Black hole finder. Both are backed by a comparable volume of ratings — 25 and 7 respectively. Written reviews are what separate them: 70% of Intergalactic Solar System's written reviews are positive against 63% of Black hole finder's.

Intergalactic Solar System ships an update monthly, Black hole finder every 10 days. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Intergalactic Solar System | Black hole finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (25 ratings)](https://appshunter.io/ios/app/intergalactic-solar-system/id1505399254/reviews) | **[4.1 (7 ratings)](https://appshunter.io/ios/app/black-hole-finder/id6446029571/reviews)** |
| Number of ratings | **25** | 7 |
| Positive reviews | **70.0% of reviews** | 62.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 355 MB | 81 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intergalactic Education LLC](https://appshunter.io/developer/1364648815) | [DDQ](https://appshunter.io/developer/418328467) |

## What reviewers say

### Intergalactic Solar System

[App page](https://appshunter.io/ios/app/intergalactic-solar-system/id1505399254)

Explore planets, moons, and countries in this space simulator mini-game. Learn astronomy and geography aligned with next-generation science standards. Discover the Milky Way galaxy and assess your knowledge through engaging gameplay.

**Highlights:** Planet and moon exploration, Country geography learning, Milky Way galaxy view, Common Core aligned curriculum, Proficiency assessment, Engaging gameplay levels

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access to Full Game | $3.99 | one-time |


### Black hole finder

[App page](https://appshunter.io/ios/app/black-hole-finder/id6446029571)

Contribute to cutting-edge astronomical research by identifying potential black holes and rare elements. Sift through real-time telescope images to detect fleeting light signals from cosmic events and potentially earn co-authorship on scientific publications.

**Highlights:** Analyze real-time telescope images, Detect light signals from cosmic events, Contribute to scientific research, Potential co-authorship on publications, Learn about black holes and neutron star mergers, Direct telescopes for additional measurements

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

**In-app purchases:** none


## Frequently asked questions

### Is Intergalactic Solar System free?

Intergalactic Solar System is free to download, with in-app purchases available.

### Is Black hole finder free?

Black hole finder is free to download, with no in-app purchases.

### Which has better reviews, Intergalactic Solar System or Black hole finder?

Black hole finder is rated higher. Intergalactic Solar System averages 4.0 out of 5 from 25 ratings, while Black hole finder averages 4.1 from 7 ratings.

### Do Intergalactic Solar System or Black hole finder have ads?

Neither Intergalactic Solar System nor Black hole finder shows ads.

### Which is updated more often, Intergalactic Solar System or Black hole finder?

Intergalactic Solar System ships an update monthly, and Black hole finder every 10 days. Most recently, Intergalactic Solar System was updated on October 9, 2026 and Black hole finder 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.*