# オタ活日記 vs 作品ログ

The clearest difference is in-app purchases: 作品ログ at none against オタ活日記's 2. 作品ログ also leads on ads (none vs shown) and update cadence (every 5 days vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. オタ活日記 sells 2 in-app purchases, starting at $3.99 per month. 作品ログ asks for nothing beyond the download.

オタ活日記 ships an update fortnightly, 作品ログ every 5 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | オタ活日記 | 作品ログ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 5 days** |
| Size | 62 MB | 38 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [YUGA YAMAGUCHI](https://appshunter.io/developer/6772869311) | [Katsuhide Leung](https://appshunter.io/developer/6775420732) |

## What reviewers say

### オタ活日記

[App page](https://appshunter.io/ios/app/id6772869309)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム | $3.99 | per month |
| プレミアム | $11.99 | one-time |


### 作品ログ

[App page](https://appshunter.io/ios/app/id6809163721)

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

**In-app purchases:** none


## Frequently asked questions

### Is オタ活日記 free?

オタ活日記 is free to download, with in-app purchases available.

### Is 作品ログ free?

作品ログ is free to download, with no in-app purchases.

### Do オタ活日記 or 作品ログ have ads?

オタ活日記 shows ads; 作品ログ does not.

### Which is updated more often, オタ活日記 or 作品ログ?

オタ活日記 ships an update fortnightly, and 作品ログ every 5 days. Most recently, オタ活日記 was updated on October 24, 2026 and 作品ログ on October 26, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*