# Stack the Countries® vs Solar System for kids

The clearest difference is price: Solar System for kids at Free against Stack the Countries®'s $2.99. Solar System for kids also leads on update cadence (every 2 months vs every 6 months). Stack the Countries®'s advantage is in-app purchases (none vs 1) and review sentiment (92% vs 59%). On rating, ads, device support and iOS requirement there is nothing between them.

Solar System for kids is free to download; Stack the Countries® costs $2.99 up front. Solar System for kids sells 1 one-off in-app purchase. Stack the Countries® asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Stack the Countries® against 4.5 for Solar System for kids. Both are backed by a comparable volume of ratings — 1K and 245 respectively. Written reviews are what separate them: 92% of Stack the Countries®'s written reviews are positive against 59% of Solar System for kids's.

Stack the Countries® ships an update every 6 months, Solar System for kids every 2 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | Stack the Countries® | Solar System for kids |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.6 (1K ratings)](https://appshunter.io/ios/app/stack-the-countries/id407838198/reviews)** | [4.5 (245 ratings)](https://appshunter.io/ios/app/solar-system-for-kids-space/id1572564923/reviews) |
| Number of ratings | **1K** | 245 |
| Positive reviews | **91.5% of reviews** | 59.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#11** | — |
| Size | 132 MB | 160 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Freecloud Design, Inc.](https://appshunter.io/developer/324355664) | [Kokotots](https://appshunter.io/developer/1558678894) |

## What reviewers say

### Stack the Countries®

[App page](https://appshunter.io/ios/app/stack-the-countries/id407838198)

**Currently charting:** #11 Top Paid · Education, #123 Top Paid (US App Store)

Learn world geography through a fun, interactive game. Stack animated countries by answering questions about capitals, landmarks, and locations. Collect all countries and unlock bonus games for a comprehensive learning experience.

**Highlights:** Learn country capitals, landmarks, and locations, Build stacks of countries to win levels, Collect all 193 countries, Unlock bonus games: Map It! and Pile Up!, Focus on specific continents or the whole world, 193 country flash cards and interactive maps, Play in English, Spanish, and French

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent educational game
- 🤩 Fun and engaging
- 🧠 Helps improve geography knowledge
- 👨‍👩‍👧‍👦 Great for all ages
- 🕹️ Addictive gameplay

**What reviewers complain about**

- 🐛 Some bugs and glitches
- 🤔 Repetitive questions
- 🗺️ Inaccurate country sizes/shapes
- 🔍 Missing certain countries/territories

**Reported bugs**

- Albania's position is tilted
- Overlapping of certain countries (e.g. Turkmenistan, Uzbekistan, Afghanistan)
- Incorrect information (e.g. Pyongyang in South Korea)
- Game freezing or crashing
- Progress not saving properly

**Requested features**

- Add more countries and territories (e.g. Vatican City, Western Sahara, Kosovo, Taiwan)
- Improve accuracy of country sizes and shapes
- Increase variety of questions (e.g. capitals, landmarks, languages, geography facts)
- Add read-aloud option for questions
- Introduce more game modes and difficulty levels


### Solar System for kids

[App page](https://appshunter.io/ios/app/solar-system-for-kids-space/id1572564923)

This app introduces children aged 2 and up to the solar system through interactive games and puzzles. It offers various learning modes, including memory challenges, word tracing, and spelling activities, to make learning about planets and space engaging and fun.

**Highlights:** Interactive planet games, Memory puzzles, Word tracing and spelling, Educational videos, Immersive graphics, Galaxy learning

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $9.99 | one-time |

**What reviewers like**

- 👍 Educational for kids
- 👍 Fun and engaging games
- 👍 Beautiful illustrations and colors
- 👍 Pleasant sounds
- 👍 Kid-friendly

**What reviewers complain about**

- 💰 Everything costs money
- 💰 Too expensive to purchase
- 💰 Locked content
- 😞 Disappointed with payment model
- 😞 Faulty purchase restoration

**Reported bugs**

- 🐛 Error message: get full access
- 🐛 Unable to restore purchase
- 🐛 Lock icons appear

**Requested features**

- Unlock all planets
- Make app more affordable


## Frequently asked questions

### Is Stack the Countries® free?

Stack the Countries® costs $2.99, with no in-app purchases.

### Is Solar System for kids free?

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

### Which has better reviews, Stack the Countries® or Solar System for kids?

Stack the Countries® is rated higher. Stack the Countries® averages 4.6 out of 5 from 1K ratings, while Solar System for kids averages 4.5 from 245 ratings.

### Do Stack the Countries® or Solar System for kids have ads?

Neither Stack the Countries® nor Solar System for kids shows ads.

### Which is updated more often, Stack the Countries® or Solar System for kids?

Stack the Countries® ships an update every 6 months, and Solar System for kids every 2 months. Most recently, Stack the Countries® was updated on October 23, 2026 and Solar System for kids on October 23, 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.*