# サイボウズ Office vs Chouseisan

The clearest difference is review sentiment: Chouseisan at 75% against サイボウズ Office's 26%. Chouseisan also leads on rating (4.8 vs 3.0) and ratings volume (40 vs 1). サイボウズ Office's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Chouseisan holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Chouseisan has 40 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 26% of サイボウズ Office's written reviews are positive against 75% of Chouseisan's.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | サイボウズ Office | Chouseisan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/office/id1040053533/reviews) | **[4.8 (40 ratings)](https://appshunter.io/ios/app/chouseisan/id6448971739/reviews)** |
| Number of ratings | 1 | **40** |
| Positive reviews | 26.0% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | **Free** | Ad-supported |
| Size | 38 MB | 97 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cybozu, Inc.](https://appshunter.io/developer/370534911) | [Mixtend Inc.](https://appshunter.io/developer/1687241996) |

## What reviewers say

### サイボウズ Office

[App page](https://appshunter.io/ios/app/office/id1040053533)

This official mobile app facilitates internal company communication and information sharing. It offers features like scheduling, bulletin boards, and workflow approvals, enabling seamless collaboration for remote and on-the-go teams. Access requires existing "Cybozu Office" login credentials.

**Highlights:** Schedule management, Bulletin boards, Workflow approvals, Internal communication, Information sharing, Mobile access

**Features:** Vision Pro support

**In-app purchases:** none


### Chouseisan

[App page](https://appshunter.io/ios/app/chouseisan/id6448971739)

This free scheduling app simplifies organizing events for both personal and professional use. Easily create event pages and share URLs to coordinate with guests, making it a top choice for smooth itinerary planning.

**Highlights:** Streamlines event scheduling, Organizes private and business events, Easy event page creation, Shareable event URLs, Large user base in Japan

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

**In-app purchases:** none


## Frequently asked questions

### Is サイボウズ Office free?

サイボウズ Office is free to download, with no in-app purchases.

### Is Chouseisan free?

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

### Which has better reviews, サイボウズ Office or Chouseisan?

Chouseisan is rated higher. サイボウズ Office averages 3.0 out of 5 from 1 ratings, while Chouseisan averages 4.8 from 40 ratings.

### Do サイボウズ Office or Chouseisan have ads?

Chouseisan shows ads; サイボウズ Office does not.

### Which is updated more often, サイボウズ Office or Chouseisan?

サイボウズ Office ships an update fortnightly, and Chouseisan fortnightly. Most recently, サイボウズ Office was updated on September 23, 2026 and Chouseisan on September 22, 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.*