# Intergalactic Rocket Trivia vs Stars Units Sizes Objects

The clearest difference is rating: Intergalactic Rocket Trivia at 5.0 against Stars Units Sizes Objects's 4.2. Intergalactic Rocket Trivia also leads on ads (none vs shown) and update cadence (every 4 weeks vs every 4 months). Stars Units Sizes Objects's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 13.0). On price, ratings volume and device support there is nothing between them.

Both are free to download. Intergalactic Rocket Trivia sells 1 one-off in-app purchase. Stars Units Sizes Objects asks for nothing beyond the download.

Intergalactic Rocket Trivia holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 100% of Intergalactic Rocket Trivia's written reviews are positive against 80% of Stars Units Sizes Objects's.

Intergalactic Rocket Trivia ships an update every 4 weeks, Stars Units Sizes Objects every 4 months. The most recent releases landed on October 6, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Intergalactic Rocket Trivia | Stars Units Sizes Objects |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/intergalactic-rocket-trivia/id1526165517/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571/reviews) |
| Number of ratings | **6** | 5 |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 251 MB | 124 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intergalactic Education LLC](https://appshunter.io/developer/1364648815) | [Mudarmeen Munlin](https://appshunter.io/developer/1348165664) |

## What reviewers say

### Intergalactic Rocket Trivia

[App page](https://appshunter.io/ios/app/intergalactic-rocket-trivia/id1526165517)

Test your knowledge of the solar system and space achievements with this trivia game. Earn rewards and launch rockets as you learn. Optional reports are available for deeper analysis.

**Highlights:** Space trivia questions, Solar system facts, Space achievements, Rocket launching gameplay, Progress tracking, Optional analysis reports

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rocket Report | $2.99 | one-time |


### Stars Units Sizes Objects

[App page](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571)

Explore the vastness of the universe, from the smallest particles to the largest cosmic structures. Compare object sizes, view detailed images, and perform unit conversions across a wide range of astronomical scales. Learn about stars, galaxies, and the incredible distances between them.

**Highlights:** Compare object sizes, View object images, Pinch/Zoom and Pan images, Unit conversion for distances, Explore scales from Planck length to observable universe, Learn about stars and galaxies

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Intergalactic Rocket Trivia free?

Intergalactic Rocket Trivia is free to download, with in-app purchases available.

### Is Stars Units Sizes Objects free?

Stars Units Sizes Objects is free to download, with no in-app purchases.

### Which has better reviews, Intergalactic Rocket Trivia or Stars Units Sizes Objects?

Intergalactic Rocket Trivia is rated higher. Intergalactic Rocket Trivia averages 5.0 out of 5 from 6 ratings, while Stars Units Sizes Objects averages 4.2 from 5 ratings.

### Do Intergalactic Rocket Trivia or Stars Units Sizes Objects have ads?

Stars Units Sizes Objects shows ads; Intergalactic Rocket Trivia does not.

### Which is updated more often, Intergalactic Rocket Trivia or Stars Units Sizes Objects?

Intergalactic Rocket Trivia ships an update every 4 weeks, and Stars Units Sizes Objects every 4 months. Most recently, Intergalactic Rocket Trivia was updated on October 6, 2026 and Stars Units Sizes Objects on September 22, 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.*