# 秀墨间 vs AI Einkcase

秀墨间 and AI Einkcase are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

秀墨间 ships an update every 9 days, AI Einkcase fortnightly. The most recent releases landed on October 10, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 秀墨间 | AI Einkcase |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai-einkcase/id6695752840/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Monetization | — | Free |
| Size | 37 MB | 30 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Shenzhen Tulianyun Technology Co., Ltd](https://appshunter.io/developer/1722035703) | [露衡 王](https://appshunter.io/developer/1733679955) |

## What reviewers say

### 秀墨间

[App page](https://appshunter.io/ios/app/id6472440300)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Einkcase

[App page](https://appshunter.io/ios/app/ai-einkcase/id6695752840)

Customize your e-ink phone case display with custom text and images. Access a library of themes or create your own unique wallpapers. Enhance picture quality for clearer illustrations and portraits.

**Highlights:** DIY text and picture display, Official theme library, Image quality enhancement, QR code/schedule display, Filter and special effects, Personal picture collection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 秀墨间 free?

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

### Is AI Einkcase free?

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

### Do 秀墨间 or AI Einkcase have ads?

Neither 秀墨间 nor AI Einkcase shows ads.

### Which is updated more often, 秀墨间 or AI Einkcase?

秀墨间 ships an update every 9 days, and AI Einkcase fortnightly. Most recently, 秀墨间 was updated on October 10, 2026 and AI Einkcase on October 21, 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.*