# 口语AI vs DevilBrain

口语AI and DevilBrain are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 口语AI sells 5 in-app purchases, starting at $3.99 per month and DevilBrain sells 7 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 口语AI | DevilBrain |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 61.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 70 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sichuan Danghe Technology Co., Ltd.](https://appshunter.io/developer/1702621045) | [青青 吴](https://appshunter.io/developer/1594811700) |

## What reviewers say

### 口语AI

[App page](https://appshunter.io/ios/app/ai/id6749158152)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月卡会员 | $3.99 | per month |
| 季卡会员 | $11.99 | per 3 months |
| 年卡会员 | $39.99 | per year |
| 单次上麦 | $0.99 | one-time |
| 终身会员 | $49.99 | one-time |


### 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 口语AI free?

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

### Is DevilBrain free?

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

### Do 口语AI or DevilBrain have ads?

Neither 口语AI nor DevilBrain shows ads.

### Which is updated more often, 口语AI or DevilBrain?

口语AI ships an update every 9 days, and DevilBrain every 9 days. Most recently, 口语AI was updated on October 3, 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.*