# ATOM vs Astral Book

The clearest difference is update cadence: Astral Book at weekly against ATOM's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ATOM sells 19 in-app purchases, starting at $0.99 per month and Astral Book sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ATOM ships an update every 2 months, Astral Book weekly. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | ATOM | Astral Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/atom/id1501313647/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 4.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 254 MB | 54 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ATOM tech Inc.](https://appshunter.io/developer/1487907066) | [kazuki korenori](https://appshunter.io/developer/1884835388) |

## What reviewers say

### ATOM

[App page](https://appshunter.io/ios/app/atom/id1501313647)

Control and manage your ATOM series smart devices from a single application. This app allows for centralized operation and management of various smart home products.

**Highlights:** Control ATOM series smart devices, Manage smart devices, Centralized operation, Single application interface

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

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ViewSay Lite · 月額 · 1台 | $0.99 | per month |
| ViewSay Lite · 月額 · 2台 | $1.99 | per month |
| モーション検知録画（Lite） · 月額 · 1台 | $1.99 | per month |
| モーション検知録画（Lite） · 月額 · 2台 | $2.99 | per month |
| ViewSay Lite · 月額 · 4台 | $3.99 | per month |
| モ一ション検知無制限録画（14日）（1台） | $3.99 | per month |
| ViewSay Lite · 月額 · 5台 | $5.99 | per month |
| ViewSay Lite · 月額 · 6台 | $6.99 | per month |
| ViewSay Lite · 月額 · 7台 | $7.99 | per month |
| モ一ション検知無制限録画（14日）（2台） | $7.99 | per month |
| ViewSay Lite · 月額 · 8台 | $8.99 | per month |
| モ一ション検知無制限録画（14日）（3台） | $11.99 | per month |
| モ一ション検知無制限録画（14日）（4台） | $14.99 | per month |
| モ一ション検知無制限録画（14日）（5台） | $19.99 | per month |
| モ一ション検知無制限録画（14日）（6台） | $24.99 | per month |
| モ一ション検知無制限録画（14日）（8台） | $29.99 | per month |
| モ一ション検知無制限録画（14日）（7台） | $29.99 | per month |
| モ一ション検知無制限録画（14日）（10台） | $39.99 | per month |
| モ一ション検知無制限録画（14日）（9台） | $39.99 | per month |


### Astral Book

[App page](https://appshunter.io/ios/app/astral-book/id6764449141)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Astral Book Pro | $5.99 | one-time |


## Frequently asked questions

### Is ATOM free?

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

### Is Astral Book free?

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

### Do ATOM or Astral Book have ads?

Neither ATOM nor Astral Book shows ads.

### Which is updated more often, ATOM or Astral Book?

ATOM ships an update every 2 months, and Astral Book weekly. Most recently, ATOM was updated on October 14, 2026 and Astral Book 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.*