# 口才练习 21 天 vs Brain Lab

The clearest difference is review sentiment: Brain Lab at 80% against 口才练习 21 天's 22%. Brain Lab also leads on update cadence (every 3 days vs every 2 months) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 口才练习 21 天 sells 1 one-off in-app purchase and Brain Lab sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

口才练习 21 天 ships an update every 2 months, Brain Lab every 3 days. The most recent releases landed on October 21, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 口才练习 21 天 | Brain Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/brain-lab-prefrontal-training/id6772660279/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 22.2% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 1 MB | 47 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [阳 孙](https://appshunter.io/developer/1518808403) | [子栋 林](https://appshunter.io/developer/6772566874) |

## What reviewers say

### 口才练习 21 天

[App page](https://appshunter.io/ios/app/21/id6755531952)

Improve your public speaking and communication skills with AI-powered practice. This app offers daily exercises and feedback to help you speak more confidently and clearly in various situations, from interviews to presentations. Achieve noticeable progress in just 21 days.

**Highlights:** AI voice analysis and scoring, 21-day systematic training plan, Multi-scenario practice modules, Progress visualization, Daily 10-15 minute sessions, Practice history playback

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁21天口才 | $0.99 | one-time |


### Brain Lab

[App page](https://appshunter.io/ios/app/brain-lab-prefrontal-training/id6772660279)

Train your prefrontal cortex to improve focus, memory, and decision-making. This app offers science-inspired exercises and tracks your progress over time. Engage in daily workouts to combat brain fog and enhance cognitive abilities.

**Highlights:** 7 Training Modes for different brain regions, Cognitive Check to assess baseline and track progress, Visual Dashboard with score trends and ability radar, Social features for comparing stats with friends, Daily 10-minute brain workouts, Personalized suggestions based on cognitive profile

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brain Lab Premium (Monthly) | $9.99 | per month |
| Brain Lab Premium (Yearly) | $59.99 | per year |
| Brain Lab Premium (Lifetime) | $99.99 | one-time |


## Frequently asked questions

### Is 口才练习 21 天 free?

口才练习 21 天 is free to download, with in-app purchases available.

### Is Brain Lab free?

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

### Do 口才练习 21 天 or Brain Lab have ads?

Neither 口才练习 21 天 nor Brain Lab shows ads.

### Which is updated more often, 口才练习 21 天 or Brain Lab?

口才练习 21 天 ships an update every 2 months, and Brain Lab every 3 days. Most recently, 口才练习 21 天 was updated on October 21, 2026 and Brain Lab on October 18, 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.*