Universe Size Comparison vs Intergalactic Solar System
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Universe Size Comparison
Explore the vastness of space and understand celestial body dimensions through interactive 3D comparisons. Discover the scale of planets and stars, from our Sun to hypergiant stars, with guided tours and free comparison modes.
- 3D astronomical comparisons
- Tour Mode with guided explanations
- Free Mode for custom comparisons
- Scale comparisons of planets and stars
- Detailed celestial body information
- Elegant user interface
Read full descriptionHide full description
Universe Size Comparison is a unique 3D astronomical app that will make you understand the real dimensions of the universe and how small we are. Have you ever wondered how big the Sun is compared to Earth? Or what is the largest planet between Mars and Earth? Do you want to find out the dimensions of some of the most famous stars in the sky like Rigel and Betelgeuse in comparison to our Sun? Do you want to compare everything with the hypergiant star VY Canis Majoris? Universe Size Comparison is the right app for you. The app offers two modes: Tour Mode and Free Mode. Tour mode will guide you on a spectacular journey where you will see planets and stars compared in full scale. All accompanied by simple and clear explanations regardless of the level of knowledge of the subject. The Free mode will allow you to compare two celestial bodies of your choice in scale. You will also find out more information on the bodies you are comparing thanks to an elegant user interface designed to offer the maximum user experience.
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
Read full descriptionHide full description
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!
Screenshots
Verdict
The clearest difference is price: Intergalactic Solar System at Free against Universe Size Comparison's $1.99. Intergalactic Solar System also leads on rating (4.0 vs 3.2) and update cadence (monthly vs every 3 months). Universe Size Comparison's advantage is in-app purchases (none vs 1). On review sentiment, ratings volume, ads and device support 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
Intergalactic Solar System is free to download; Universe Size Comparison costs $1.99 up front. Intergalactic Solar System sells 1 one-off in-app purchase. Universe Size Comparison asks for nothing beyond the download.
Intergalactic Solar System holds the better App Store score, 4.0 against 3.2. Both are backed by a comparable volume of ratings — 30 and 25 respectively. Written reviews split almost evenly too, at 70% and 70% positive.
Universe Size Comparison ships an update every 3 months, Intergalactic Solar System monthly. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.
| Parameter | Universe Size Comparison | Intergalactic Solar System |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.2 (30 ratings) | 4.0 (25 ratings) — better |
| Positive reviews | 70.0% of reviews | 70.0% of reviews |
| Number of ratings | 30 — better | 25 |
| Update frequency | Every 3 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 411 MB | 355 MB |
| Age rating | +4 | 4+ |
| Developer | Daniele Citi | Intergalactic Education LLC |
Customer experience
Universe Size Comparison
Intergalactic Solar System
In-app purchases
Universe Size Comparison
No in-app purchases
Intergalactic Solar System
- Access to Full Game$3.99
Questions
Is Universe Size Comparison free?
Is Intergalactic Solar System free?
Which has better reviews, Universe Size Comparison or Intergalactic Solar System?
Do Universe Size Comparison or Intergalactic Solar System have ads?
Which is updated more often, Universe Size Comparison or Intergalactic Solar System?
Other comparisons















