# 작심삼일 vs 뻐꾹! Cuckoo

The clearest difference is ads: 뻐꾹! Cuckoo at none against 작심삼일's shown. 작심삼일's advantage is update cadence (every 2 days vs every 6 days) and iOS requirement (12.0 vs 16.0). 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.

작심삼일 ships an update every 2 days, 뻐꾹! Cuckoo every 6 days. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 작심삼일 | 뻐꾹! Cuckoo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 6 days |
| Size | 45 MB | 4 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pathfinder, Incorporated](https://appshunter.io/developer/1688966386) | [Heyjin Kim](https://appshunter.io/developer/1887724613) |

## What reviewers say

### 작심삼일

[App page](https://appshunter.io/ios/app/id6757416865)

**Features:** macOS Compatibility

**In-app purchases:** none


### 뻐꾹! Cuckoo

[App page](https://appshunter.io/ios/app/cuckoo/id6761085601)

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

**In-app purchases:** none


## Frequently asked questions

### Is 작심삼일 free?

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

### Is 뻐꾹! Cuckoo free?

뻐꾹! Cuckoo is free to download, with no in-app purchases.

### Do 작심삼일 or 뻐꾹! Cuckoo have ads?

작심삼일 shows ads; 뻐꾹! Cuckoo does not.

### Which is updated more often, 작심삼일 or 뻐꾹! Cuckoo?

작심삼일 ships an update every 2 days, and 뻐꾹! Cuckoo every 6 days. Most recently, 작심삼일 was updated on October 6, 2026 and 뻐꾹! Cuckoo on October 14, 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.*