# 구해 vs BrainLog 브레인로그

The clearest difference is in-app purchases: BrainLog 브레인로그 at none against 구해's 3. BrainLog 브레인로그 also leads on update cadence (weekly vs every 4 months) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 구해 sells 3 one-off in-app purchases. BrainLog 브레인로그 asks for nothing beyond the download.

구해 ships an update every 4 months, BrainLog 브레인로그 weekly. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 구해 | BrainLog 브레인로그 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id1538378326/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Size | 32 MB | 318 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Digital Daesung](https://appshunter.io/developer/476488589) | [BrainU Co.,Ltd.](https://appshunter.io/developer/1621238912) |

## What reviewers say

### 구해

[App page](https://appshunter.io/ios/app/id1538378326)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 구해 질문 이용권 5회 | $1.99 | one-time |
| 구해 질문 이용권 10회 | $3.99 | one-time |
| 구해 질문 이용권 30회 | $7.99 | one-time |


### BrainLog 브레인로그

[App page](https://appshunter.io/ios/app/brainlog/id6760745277)

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

**In-app purchases:** none


## Frequently asked questions

### Is 구해 free?

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

### Is BrainLog 브레인로그 free?

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

### Do 구해 or BrainLog 브레인로그 have ads?

Neither 구해 nor BrainLog 브레인로그 shows ads.

### Which is updated more often, 구해 or BrainLog 브레인로그?

구해 ships an update every 4 months, and BrainLog 브레인로그 weekly. Most recently, 구해 was updated on October 24, 2026 and BrainLog 브레인로그 on October 6, 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.*