# Chouseisan vs コツログ

The clearest difference is ads: コツログ at none against Chouseisan's shown. Chouseisan's advantage is iOS requirement (15.6 vs 17.0). 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 ships an update fortnightly, コツログ every 3 weeks. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Chouseisan | コツログ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (40 ratings)](https://appshunter.io/ios/app/chouseisan/id6448971739/reviews)** | — |
| Number of ratings | **40** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 97 MB | 11 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mixtend Inc.](https://appshunter.io/developer/1687241996) | [Sota Ohno](https://appshunter.io/developer/6778257909) |

## What reviewers say

### 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


### コツログ

[App page](https://appshunter.io/ios/app/id6778257541)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chouseisan free?

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

### Is コツログ free?

コツログ is free to download, with no in-app purchases.

### Do Chouseisan or コツログ have ads?

Chouseisan shows ads; コツログ does not.

### Which is updated more often, Chouseisan or コツログ?

Chouseisan ships an update fortnightly, and コツログ every 3 weeks. Most recently, Chouseisan was updated on October 18, 2026 and コツログ on October 10, 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.*