# DASUNG vs 积墨投屏

The clearest difference is update cadence: DASUNG at fortnightly against 积墨投屏's every 3 months. DASUNG also leads on iOS requirement (11.0 vs 13.0). On price, ads, 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.

DASUNG ships an update fortnightly, 积墨投屏 every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | DASUNG | 积墨投屏 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/dasung-link/id1658501226/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free | — |
| Size | 33 MB | 48 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Beijing Dasung Tech Co., Ltd](https://appshunter.io/developer/1658501228) | [Hangzhou Small Fire Network Technology Co., Ltd.](https://appshunter.io/developer/1106805320) |

## What reviewers say

### DASUNG

[App page](https://appshunter.io/ios/app/dasung-link/id1658501226)

This utility app allows for smart adjustments to compatible e-ink displays. Users can control contrast, speed, picture mode, and front light brightness, along with features like ghosting removal.

**Highlights:** Three-dimensional picture adjustment (contrast, speed, picture mode), Front light brightness control, Smart ghosting removal, Compatibility with Link and Paperlike U (wireless), Intelligent auxiliary software

**Features:** macOS Compatibility

**In-app purchases:** none


### 积墨投屏

[App page](https://appshunter.io/ios/app/id6448000400)

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

**In-app purchases:** none


## Frequently asked questions

### Is DASUNG free?

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

### Is 积墨投屏 free?

积墨投屏 is free to download, with no in-app purchases.

### Do DASUNG or 积墨投屏 have ads?

Neither DASUNG nor 积墨投屏 shows ads.

### Which is updated more often, DASUNG or 积墨投屏?

DASUNG ships an update fortnightly, and 积墨投屏 every 3 months. Most recently, DASUNG was updated on November 3, 2026 and 积墨投屏 on November 3, 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.*