# Comet Book vs 日本酒検定 準1級 | 2026年対策問題

The clearest difference is price: Comet Book at Free against 日本酒検定 準1級 | 2026年対策問題's $1.99. Comet Book also leads on iOS requirement (12.0 vs 17.0). 日本酒検定 準1級 | 2026年対策問題's advantage is update cadence (every 2 months vs every 6 months). On ads, in-app purchases and device support there is nothing between them.

Comet Book is free to download; 日本酒検定 準1級 | 2026年対策問題 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Comet Book ships an update every 6 months, 日本酒検定 準1級 | 2026年対策問題 every 2 months. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Comet Book | 日本酒検定 準1級 | 2026年対策問題 |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/comet-book/id604782335/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 54.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 10 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Vixen Co.,Ltd.](https://appshunter.io/developer/536188843) | [Masaki Kobayashi](https://appshunter.io/developer/1882180437) |

## What reviewers say

### Comet Book

[App page](https://appshunter.io/ios/app/comet-book/id604782335)

Discover and track comets with this educational app. It provides real-time direction and elevation data to help you locate celestial objects in the night sky. Explore the solar system in 3D and visualize the movement of comets and planets.

**Highlights:** Comet viewing direction and elevation, Real-time celestial object tracking, 3D Solar System mode, Visualize comet and planet motion, Observing site guidance

**In-app purchases:** none


### 日本酒検定 準1級 | 2026年対策問題

[App page](https://appshunter.io/ios/app/1-2026/id6764086841)

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

**In-app purchases:** none


## Frequently asked questions

### Is Comet Book free?

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

### Is 日本酒検定 準1級 | 2026年対策問題 free?

日本酒検定 準1級 | 2026年対策問題 costs $1.99, with no in-app purchases.

### Do Comet Book or 日本酒検定 準1級 | 2026年対策問題 have ads?

Neither Comet Book nor 日本酒検定 準1級 | 2026年対策問題 shows ads.

### Which is updated more often, Comet Book or 日本酒検定 準1級 | 2026年対策問題?

Comet Book ships an update every 6 months, and 日本酒検定 準1級 | 2026年対策問題 every 2 months. Most recently, Comet Book was updated on October 23, 2026 and 日本酒検定 準1級 | 2026年対策問題 on October 8, 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.*