# オタ活日記 vs SOLO MUSE

The clearest difference is price: オタ活日記 at Free against SOLO MUSE's $0.99. オタ活日記 also leads on iOS requirement (15.1 vs 17.6). SOLO MUSE's advantage is ads (none vs shown) and update cadence (weekly vs fortnightly). On in-app purchases and device support there is nothing between them.

オタ活日記 is free to download; SOLO MUSE costs $0.99 up front. オタ活日記 sells 2 in-app purchases, starting at $3.99 per month and SOLO MUSE sells 7 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

オタ活日記 ships an update fortnightly, SOLO MUSE weekly. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | オタ活日記 | SOLO MUSE |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Size | 62 MB | 55 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [YUGA YAMAGUCHI](https://appshunter.io/developer/6772869311) | [Pure Solo](https://appshunter.io/developer/6794997444) |

## 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 |


### SOLO MUSE

[App page](https://appshunter.io/ios/app/solo-muse/id6794997442)

**Features:** Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Studio Monthly | $3.99 | per month |
| 1 Bulk Credit | $0.99 | one-time |
| 100 Item Storage | $4.99 | one-time |
| 500 Storage Upgrade | $5.99 | one-time |
| 30 Bulk Credits | $6.99 | one-time |
| Starter Bundle | $7.99 | one-time |
| 500 Item Storage | $11.99 | one-time |


## 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 SOLO MUSE free?

SOLO MUSE costs $0.99, and also offers in-app purchases.

### Do オタ活日記 or SOLO MUSE have ads?

オタ活日記 shows ads; SOLO MUSE does not.

### Which is updated more often, オタ活日記 or SOLO MUSE?

オタ活日記 ships an update fortnightly, and SOLO MUSE weekly. Most recently, オタ活日記 was updated on November 5, 2026 and SOLO MUSE on November 6, 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.*