# "Purring" black cat　Robin. vs 青空文庫Stella

The clearest difference is review sentiment: 青空文庫Stella at 100% against "Purring" black cat　Robin.'s 50%. 青空文庫Stella also leads on update cadence (every 4 days vs every 4 months). "Purring" black cat　Robin.'s advantage is monetization model (free vs free with in-app purchases) and iOS requirement (6.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. "Purring" black cat　Robin. sells 2 one-off in-app purchases and 青空文庫Stella sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

"Purring" black cat　Robin. ships an update every 4 months, 青空文庫Stella every 4 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | "Purring" black cat　Robin. | 青空文庫Stella |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/purring-black-cat-robin/id505662107/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 26 MB | 195 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [yumearu Co.,Ltd.](https://appshunter.io/developer/411112570) | [kyohei sugita](https://appshunter.io/developer/1850242429) |

## What reviewers say

### "Purring" black cat　Robin.

[App page](https://appshunter.io/ios/app/purring-black-cat-robin/id505662107)

A heartwarming digital picture book featuring a black cat named Robin. Created by illustrator Ryoichi Miyazaki, it offers a gentle and cozy experience for all ages, showcasing the artist's love for felines.

**Highlights:** Digital picture book format, Features a black cat named Robin, Illustrations by Ryoichi Miyazaki, Warm and cozy atmosphere, Suitable for all ages

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 日本語のナレーション | $3.99 | one-time |
| 英語の字幕とナレーション | $3.99 | one-time |


### 青空文庫Stella

[App page](https://appshunter.io/ios/app/stella/id6754812697)

Discover Japanese literature through intuition and chance. This app uses a unique Tarot feature to suggest passages, allowing you to build a personal bookshelf of resonant literary fragments. It offers tools for language learners, including furigana modes and customizable reading settings.

**Highlights:** Tarot-guided literary discovery, Personalized bookshelf, Furigana (Ruby) modes, Font size and theme customization, Aesthetic quote card creation, Reading profile sharing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stellaプレミアム | $0.99 | per month |
| Stellaプレミアム | $0.99 | per month |
| Stellaプレミアム（年間） | $9.99 | per year |


## Frequently asked questions

### Is "Purring" black cat　Robin. free?

"Purring" black cat　Robin. is free to download, with in-app purchases available.

### Is 青空文庫Stella free?

青空文庫Stella is free to download, with in-app purchases available.

### Do "Purring" black cat　Robin. or 青空文庫Stella have ads?

Neither "Purring" black cat　Robin. nor 青空文庫Stella shows ads.

### Which is updated more often, "Purring" black cat　Robin. or 青空文庫Stella?

"Purring" black cat　Robin. ships an update every 4 months, and 青空文庫Stella every 4 days. Most recently, "Purring" black cat　Robin. was updated on November 6, 2026 and 青空文庫Stella on November 5, 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.*