# 마인드 부스터 Blue vs MAJU JAJU

The clearest difference is in-app purchases: 마인드 부스터 Blue at none against MAJU JAJU's 1. 마인드 부스터 Blue also leads on iOS requirement (13 vs 16.2). MAJU JAJU's advantage is update cadence (every 5 days vs every 15 months). On price there is nothing between them.

Both are free to download. MAJU JAJU sells 1 in-app purchase, starting at $4.99 per month. 마인드 부스터 Blue asks for nothing beyond the download.

마인드 부스터 Blue ships an update every 15 months, MAJU JAJU every 5 days. The most recent releases landed on September 7, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 마인드 부스터 Blue | MAJU JAJU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 15 months | **Every 5 days** |
| Size | 72 MB | 70 MB |
| Requires iOS | **13** | 16.2 |
| Devices | — | **iPhone** |
| Age rating | 12+ | 4+ |
| Developer | [Kyong Mee Chung](https://appshunter.io/developer/1441754708) | [Insung Infomation Co., Ltd.](https://appshunter.io/developer/407705726) |

## What reviewers say

### 마인드 부스터 Blue

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

**In-app purchases:** none


### MAJU JAJU

[App page](https://appshunter.io/ios/app/maju-jaju/id6760107837)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RIA STANDARD Monthly Subscription | $4.99 | per month |


## Frequently asked questions

### Is 마인드 부스터 Blue free?

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

### Is MAJU JAJU free?

MAJU JAJU is free to download, with in-app purchases available.

### Which is updated more often, 마인드 부스터 Blue or MAJU JAJU?

마인드 부스터 Blue ships an update every 15 months, and MAJU JAJU every 5 days. Most recently, 마인드 부스터 Blue was updated on September 7, 2026 and MAJU JAJU on September 15, 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.*