# Cosduck vs IAK

The clearest difference is ads: IAK at none against Cosduck's shown. Cosduck's advantage is update cadence (every 3 days vs monthly) and iOS requirement (13.4 vs 15.1). On price, 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.

Cosduck ships an update every 3 days, IAK monthly. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Cosduck | IAK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (45 ratings)](https://appshunter.io/ios/app/cosduck/id6737409665/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 36.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | Ad-supported | — |
| Size | 60 MB | 392 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [마야크루](https://appshunter.io/developer/1242322359) | [Interessensgemeinschaft Asiatische Kultur](https://appshunter.io/developer/1813517469) |

## What reviewers say

### Cosduck

[App page](https://appshunter.io/ios/app/cosduck/id6737409665)

Discover and participate in K-Beauty collaborations. Link your social media to apply for campaigns, receive products, and post reviews to unlock more exclusive opportunities.

**Highlights:** Quick social media sign-up, Browse and select campaigns, Receive K-Beauty products, Post product reviews, Unlock exclusive campaigns, Increase membership level

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

**In-app purchases:** none


### IAK

[App page](https://appshunter.io/ios/app/iak/id6745723179)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Cosduck free?

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

### Is IAK free?

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

### Do Cosduck or IAK have ads?

Cosduck shows ads; IAK does not.

### Which is updated more often, Cosduck or IAK?

Cosduck ships an update every 3 days, and IAK monthly. Most recently, Cosduck was updated on October 15, 2026 and IAK 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.*