Intergalactic Solar System vs Inside Earth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Intergalactic Solar System
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.
- Planet and moon exploration
- Country geography learning
- Milky Way galaxy view
- Common Core aligned curriculum
- Proficiency assessment
- Engaging gameplay levels
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Intergalactic Education introduces Intergalactic Solar System, a mini-game that teaches about planets, moons, and countries. This space simulator lets you explore celestial bodies from the viewpoint of space itself. The latest edition adds the Milky Way as an observable galaxy. Intergalactic Solar System uses next generation science standards (Common Core aligned) astronomy and geography. (Follows standards ESS1.A, ESS1.B, and CCSS.ELA-LITERACY.RH.6-8.7) Try Intergalactic Solar System! Assess proficiency in Solar System knowledge according to educational standards. Rewarding levels of gameplay maintain engagement. You will forget you were doing astronomy and geography!
Inside Earth
Explore the Earth's interior by virtually peeling back its layers. Understand the composition of the crust, mantle, and core. Learn about tectonic plates, volcanism, and earthquakes.
- Interactive layer peeling
- Tectonic plate visualization
- Volcanism and earthquake explanation
- Compositional learning
- Geological process discovery
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What's inside our planet? Peel away layers to discover their composition. Learn how earth's crust is divided into tectonic plates. Discover how volcanism and earthquakes occur wherever these plates meet.
Screenshots
Verdict
The clearest difference is rating: Inside Earth at 4.8 against Intergalactic Solar System's 4.0. Inside Earth also leads on in-app purchases (none vs 1) and review sentiment (100% vs 70%). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Intergalactic Solar System sells 1 one-off in-app purchase. Inside Earth asks for nothing beyond the download.
Inside Earth holds the better App Store score, 4.8 against 4.0. Both are backed by a comparable volume of ratings — 25 and 80 respectively. Written reviews point the same way: 70% of Intergalactic Solar System's written reviews are positive against 100% of Inside Earth's.
Intergalactic Solar System ships an update monthly, Inside Earth fortnightly. The most recent releases landed on October 9, 2026 and October 20, 2026 respectively.
| Parameter | Intergalactic Solar System | Inside Earth |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (25 ratings) | 4.8 (80 ratings) — better |
| Positive reviews | 70.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 25 | 80 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 355 MB | 190 MB |
| Age rating | 4+ | 4+ |
| Developer | Intergalactic Education LLC | Sebastian Andre |
Customer experience
Intergalactic Solar System
Inside Earth
In-app purchases
Intergalactic Solar System
- Access to Full Game$3.99
Inside Earth
No in-app purchases
Questions
Is Intergalactic Solar System free?
Is Inside Earth free?
Which has better reviews, Intergalactic Solar System or Inside Earth?
Do Intergalactic Solar System or Inside Earth have ads?
Which is updated more often, Intergalactic Solar System or Inside Earth?
Other comparisons
