# 域行商家端 vs DevilBrain

The clearest difference is in-app purchases: 域行商家端 at none against DevilBrain's 7. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DevilBrain sells 7 in-app purchases, starting at $3.99 per 7 days. 域行商家端 asks for nothing beyond the download.

域行商家端 ships an update fortnightly, DevilBrain every 9 days. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 域行商家端 | DevilBrain |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 61.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 46 MB | 70 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Yuheng Technology Co., Ltd](https://appshunter.io/developer/1049218014) | [青青 吴](https://appshunter.io/developer/1594811700) |

## What reviewers say

### 域行商家端

[App page](https://appshunter.io/ios/app/id6748555345)

**Features:** macOS Compatibility

**In-app purchases:** none


### DevilBrain

[App page](https://appshunter.io/ios/app/devilbrain-brain-training/id6759943746)

This app offers cognitive conditioning and brain sharpening exercises to improve focus and memory. It provides personalized training plans and assessments to help users enhance their mental capabilities and combat phone addiction.

**Highlights:** Brain Age Assessment, Customized Training Plans, Digital Memory Challenges, Schulte Focus Training, Personal Adaptive Training, Cognitive Conditioning

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Monthly | $4.99 | per month |
| Monthly | $4.99 | per month |
| Monthly | $6.99 | per month |
| Yearly | $12.99 | per year |
| 3 Years | $39.99 | one-time |
| Permanent VIP | $39.99 | one-time |


## Frequently asked questions

### Is 域行商家端 free?

域行商家端 is free to download, with no in-app purchases.

### Is DevilBrain free?

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

### Do 域行商家端 or DevilBrain have ads?

Neither 域行商家端 nor DevilBrain shows ads.

### Which is updated more often, 域行商家端 or DevilBrain?

域行商家端 ships an update fortnightly, and DevilBrain every 9 days. Most recently, 域行商家端 was updated on October 10, 2026 and DevilBrain on October 8, 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.*