# 두둥링크 vs 에코

The clearest difference is update cadence: 에코 at weekly against 두둥링크's monthly. 두둥링크's advantage is iOS requirement (12.0 vs 17.0). 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.

두둥링크 ships an update monthly, 에코 weekly. The most recent releases landed on October 25, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 두둥링크 | 에코 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 29 MB | 17 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [NPLEY Co., Ltd.](https://appshunter.io/developer/1741470465) | [Junho Lee](https://appshunter.io/developer/1886098870) |

## What reviewers say

### 두둥링크

[App page](https://appshunter.io/ios/app/dudunglink/id6497652638)

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

**In-app purchases:** none


### 에코

[App page](https://appshunter.io/ios/app/id6797244510)

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

**In-app purchases:** none


## Frequently asked questions

### Is 두둥링크 free?

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

### Is 에코 free?

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

### Do 두둥링크 or 에코 have ads?

Neither 두둥링크 nor 에코 shows ads.

### Which is updated more often, 두둥링크 or 에코?

두둥링크 ships an update monthly, and 에코 weekly. Most recently, 두둥링크 was updated on October 25, 2026 and 에코 on October 10, 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.*