# Solar Book vs Real Solar System

The clearest difference is rating: Solar Book at 4.8 against Real Solar System's 1.0. Solar Book also leads on ratings volume (4 vs 1) and iOS requirement (12.0 vs 17.6). Real Solar System's advantage is update cadence (monthly vs every 14 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Solar Book holds the better App Store score, 4.8 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Solar Book ships an update every 14 months, Real Solar System monthly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Solar Book | Real Solar System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/solar-book/id1078873201/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/real-solar-system/id6475644962/reviews) |
| Number of ratings | **4** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Monthly** |
| Monetization | Free | Free |
| Size | 5 MB | 302 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vixen Co.,Ltd.](https://appshunter.io/developer/536188843) | [Masaya Nagaoka](https://appshunter.io/developer/1698240335) |

## 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


### Real Solar System

[App page](https://appshunter.io/ios/app/real-solar-system/id6475644962)

Explore a realistic solar system simulation using augmented reality. View the orbits of planets and celestial bodies based on real-time data, with adjustable speeds and zoom functions. Discover different objects and learn about their positions in space.

**Highlights:** Realistic AR solar system simulation, Orbits of 8 planets displayed, Realistic planet textures, Planet positions based on real values, Adjustable speed and zoom, Changeable celestial objects

**In-app purchases:** none


## Frequently asked questions

### Is Solar Book free?

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

### Is Real Solar System free?

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

### Which has better reviews, Solar Book or Real Solar System?

Solar Book is rated higher. Solar Book averages 4.8 out of 5 from 4 ratings, while Real Solar System averages 1.0 from 1 ratings.

### Do Solar Book or Real Solar System have ads?

Neither Solar Book nor Real Solar System shows ads.

### Which is updated more often, Solar Book or Real Solar System?

Solar Book ships an update every 14 months, and Real Solar System monthly. Most recently, Solar Book was updated on November 2, 2026 and Real Solar System on October 30, 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.*