# 마인드 부스터 Blue vs Duck's Dream

The clearest difference is in-app purchases: 마인드 부스터 Blue at none against Duck's Dream's 4. 마인드 부스터 Blue also leads on iOS requirement (13 vs 16.6). Duck's Dream's advantage is update cadence (every 4 days vs every 15 months). On price there is nothing between them.

Both are free to download. Duck's Dream sells 4 in-app purchases, starting at $4.99 per month. 마인드 부스터 Blue asks for nothing beyond the download.

마인드 부스터 Blue ships an update every 15 months, Duck's Dream every 4 days. The most recent releases landed on September 7, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | 마인드 부스터 Blue | Duck's Dream |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ducks-dream/id6746451155/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 94.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | Every 15 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 72 MB | 149 MB |
| Requires iOS | **13** | 16.6 |
| Devices | — | **iPhone** |
| Age rating | 12+ | 4+ |
| Developer | [Kyong Mee Chung](https://appshunter.io/developer/1441754708) | [minsoo kim](https://appshunter.io/developer/1831254303) |

## What reviewers say

### 마인드 부스터 Blue

[App page](https://appshunter.io/ios/app/blue/id1591909232)

**In-app purchases:** none


### Duck's Dream

[App page](https://appshunter.io/ios/app/ducks-dream/id6746451155)

This app uses your daily behavior patterns to suggest personalized self-care missions. It offers CBT-based guidance and quick puzzle games to help manage mood and build sustainable mental wellness through fun, achievable daily actions.

**Highlights:** Personalized self-care missions, CBT-based guidance (QuackTalk), Puzzle game for mood interruption (QuackPop), Behavioral pattern tracking (Mind Chart), Duck customization and leveling, Global leaderboard

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per month |
| 아이템  4종 | $0.99 | one-time |
| 아이템 4종 5세트 | $3.99 | one-time |
| 아이템 4종 5세트, 하트 10개 | $5.99 | one-time |


## Frequently asked questions

### Is 마인드 부스터 Blue free?

마인드 부스터 Blue is free to download, with no in-app purchases.

### Is Duck's Dream free?

Duck's Dream is free to download, with in-app purchases available.

### Which is updated more often, 마인드 부스터 Blue or Duck's Dream?

마인드 부스터 Blue ships an update every 15 months, and Duck's Dream every 4 days. Most recently, 마인드 부스터 Blue was updated on September 7, 2026 and Duck's Dream on September 4, 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.*