# DASUNG vs izuozan

The clearest difference is update cadence: DASUNG at fortnightly against izuozan's every 12 months. DASUNG also leads on iOS requirement (11.0 vs 15.0). 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, izuozan every 12 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | DASUNG | izuozan |
| --- | --- | --- |
| 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 12 months |
| Monetization | Free | — |
| Size | 33 MB | 95 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Beijing Dasung Tech Co., Ltd](https://appshunter.io/developer/1658501228) | [ChengDu Pengta Network Technology Co.Ltd](https://appshunter.io/developer/1269440615) |

## 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


### izuozan

[App page](https://appshunter.io/ios/app/izuozan/id6445960446)

**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 izuozan free?

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

### Do DASUNG or izuozan have ads?

Neither DASUNG nor izuozan shows ads.

### Which is updated more often, DASUNG or izuozan?

DASUNG ships an update fortnightly, and izuozan every 12 months. Most recently, DASUNG was updated on November 3, 2026 and izuozan on November 3, 2026.

---

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