# Solar Book vs The Moon

The clearest difference is in-app purchases: Solar Book at none against The Moon's 1. The Moon's advantage is rating (4.9 vs 4.7) and update cadence (every 6 months vs every 14 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. The Moon sells 1 one-off in-app purchase. Solar Book asks for nothing beyond the download.

The Moon holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 3 and 14 respectively.

Solar Book ships an update every 14 months, The Moon every 6 months. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Solar Book | The Moon |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/solar-book/id1078873201/reviews) | **[4.9 (14 ratings)](https://appshunter.io/ios/app/the-moon-simulation/id6526486262/reviews)** |
| Number of ratings | 3 | **14** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 6 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 81 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vixen Co.,Ltd.](https://appshunter.io/developer/536188843) | [Othman Alzahrani](https://appshunter.io/developer/1664580679) |

## What reviewers say

### Solar Book

[App page](https://appshunter.io/ios/app/solar-book/id1078873201)

This app provides detailed information about solar eclipses, including timings for different phases based on your location. It allows you to view sequential images and star charts for planning and observation.

**Highlights:** Solar eclipse phase timing, Location-based eclipse calculations, Sequential eclipse image display, Star chart visualization, Past and future eclipse planning

**In-app purchases:** none


### The Moon

[App page](https://appshunter.io/ios/app/the-moon-simulation/id6526486262)

Explore the moon with stunning realism and accuracy. This app provides real-time rendering of lunar phases, liberations, and orbital positions. Access a yearly calendar of moon phases and view the moon's location on an Earth map.

**Highlights:** Real-time moon rendering, Accurate lunar phase visualization, Intuitive time controller, Yearly moon phase calendar, Earth map with moon position, User-friendly interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support The Moon App | $0.99 | one-time |


## Frequently asked questions

### Is Solar Book free?

Solar Book is free to download, with no in-app purchases.

### Is The Moon free?

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

### Which has better reviews, Solar Book or The Moon?

The Moon is rated higher. Solar Book averages 4.7 out of 5 from 3 ratings, while The Moon averages 4.9 from 14 ratings.

### Do Solar Book or The Moon have ads?

Neither Solar Book nor The Moon shows ads.

### Which is updated more often, Solar Book or The Moon?

Solar Book ships an update every 14 months, and The Moon every 6 months. Most recently, Solar Book was updated on October 19, 2026 and The Moon on October 7, 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.*