# CMB Maps vs Encyclopedia

The clearest difference is in-app purchases: CMB Maps at none against Encyclopedia's 1. CMB Maps also leads on rating (4.0 vs 3.8) and iOS requirement (6.0 vs 15.0). Encyclopedia's advantage is review sentiment (83% vs 67%). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Encyclopedia sells 1 one-off in-app purchase. CMB Maps asks for nothing beyond the download.

CMB Maps holds the better App Store score, 4.0 against 3.8. Both are backed by a comparable volume of ratings — 14 and 14 respectively. Written reviews complicate that: 67% of CMB Maps's written reviews are positive against 83% of Encyclopedia's, so the app with the better star average is not the one people write more warmly about.

## The numbers

| Metric | CMB Maps | Encyclopedia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (14 ratings)](https://appshunter.io/ios/app/cmb-maps/id894952449/reviews)** | [3.8 (14 ratings)](https://appshunter.io/ios/app/encyclopedia-solar-system/id1124568774/reviews) |
| Number of ratings | 14 | 14 |
| Positive reviews | 66.7% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 57 MB | 322 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Qingqing Mao](https://appshunter.io/developer/894952452) | [Good Spider, LLC](https://appshunter.io/developer/1487595667) |

## What reviewers say

### CMB Maps

[App page](https://appshunter.io/ios/app/cmb-maps/id894952449)

Explore detailed all-sky maps of cosmic microwave background radiation from the Big Bang. Compare different generations of fluctuations in high resolution and view galactic coordinates and microwave sources.

**Highlights:** 4K resolution CMB maps, Compare multiple maps, Zoom and scroll for details, Sky reference map, Educational demonstration tool

**Features:** macOS Compatibility

**In-app purchases:** none


### Encyclopedia

[App page](https://appshunter.io/ios/app/encyclopedia-solar-system/id1124568774)

Explore the solar system with extensive articles and high-definition images. This app offers comprehensive information, engaging content, and a user-friendly interface, making it suitable for both children and adults interested in space.

**Highlights:** Thousands of articles and HD photos, Comprehensive solar system information, Engaging and easy-to-understand content, Offline availability, Badge collection for reading, Intuitive user interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Frequently asked questions

### Is CMB Maps free?

CMB Maps is free to download, with no in-app purchases.

### Is Encyclopedia free?

Encyclopedia is free to download, with in-app purchases available.

### Which has better reviews, CMB Maps or Encyclopedia?

CMB Maps is rated higher. CMB Maps averages 4.0 out of 5 from 14 ratings, while Encyclopedia averages 3.8 from 14 ratings.

### Do CMB Maps or Encyclopedia have ads?

Neither CMB Maps nor Encyclopedia shows ads.

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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.*