# Palindrome vs Intergalactic Solar System

The clearest difference is review sentiment: Intergalactic Solar System at 70% against Palindrome's 0%. Intergalactic Solar System also leads on price (Free vs $0.99) and rating (4.0 vs 1.0). Palindrome's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Intergalactic Solar System is free to download; Palindrome costs $0.99 up front. Intergalactic Solar System sells 1 one-off in-app purchase. Palindrome asks for nothing beyond the download.

Intergalactic Solar System holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: Intergalactic Solar System has 25 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Palindrome's written reviews are positive against 70% of Intergalactic Solar System's.

Palindrome ships an update every 22 months, Intergalactic Solar System monthly. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Palindrome | Intergalactic Solar System |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/palindrome/id311458354/reviews) | **[4.0 (25 ratings)](https://appshunter.io/ios/app/intergalactic-solar-system/id1505399254/reviews)** |
| Number of ratings | 2 | **25** |
| Positive reviews | 0.0% of reviews | **70.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 22 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 355 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [Intergalactic Education LLC](https://appshunter.io/developer/1364648815) |

## What reviewers say

### Palindrome

[App page](https://appshunter.io/ios/app/palindrome/id311458354)

Discover words and phrases that read the same forwards and backward. Save your findings and share them with friends via email. A simple yet engaging way to explore language.

**Highlights:** Find palindromes, Save discoveries, Share via email, Word game, Language exploration

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Palindrome free?

Palindrome costs $0.99, with no in-app purchases.

### Is Intergalactic Solar System free?

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

### Which has better reviews, Palindrome or Intergalactic Solar System?

Intergalactic Solar System is rated higher. Palindrome averages 1.0 out of 5 from 2 ratings, while Intergalactic Solar System averages 4.0 from 25 ratings.

### Do Palindrome or Intergalactic Solar System have ads?

Neither Palindrome nor Intergalactic Solar System shows ads.

### Which is updated more often, Palindrome or Intergalactic Solar System?

Palindrome ships an update every 22 months, and Intergalactic Solar System monthly. Most recently, Palindrome was updated on October 3, 2026 and Intergalactic Solar System on October 9, 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.*