# 知呀 vs 大脑营行

The clearest difference is ads: 知呀 at none against 大脑营行's shown. 知呀 also leads on iOS requirement (10.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. 知呀 sells 7 one-off in-app purchases and 大脑营行 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on November 7, 2026.

## The numbers

| Metric | 知呀 | 大脑营行 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/ai/id1577501170/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 90.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 186 MB | 403 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Huayi Century Enterprise Management Consultant Co., Ltd.](https://appshunter.io/developer/1524925202) | [苏州共营互联网科技有限公司](https://appshunter.io/developer/1574814040) |

## What reviewers say

### 知呀

[App page](https://appshunter.io/ios/app/id1524925200)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1年知呀 VIP | $0.99 | one-time |
| 12知呀币 | $1.99 | one-time |
| 50知呀币 | $6.99 | one-time |
| 98知呀币 | $14.99 | one-time |
| 198知呀币 | $29.99 | one-time |
| 518知呀币 | $69.99 | one-time |
| 998知呀币 | $149.99 | one-time |


### 大脑营行

[App page](https://appshunter.io/ios/app/ai/id1577501170)

This AI-powered assistant offers comprehensive business intelligence solutions for enterprise management. It covers strategy, marketing, sales, team building, and compliance, providing expert guidance for business owners and professionals.

**Highlights:** AI-powered business intelligence, Strategy and decision support, Marketing and brand positioning, Sales process navigation, Team building and management, Compliance and risk management

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 大脑币28元 | $3.99 | one-time |
| 大脑币68元 | $9.99 | one-time |
| 大脑币88元 | $12.99 | one-time |
| 大脑币128元 | $19.99 | one-time |
| 大脑币198元 | $29.99 | one-time |
| 大脑币228元 | $29.99 | one-time |
| 大脑币500元 | $69.99 | one-time |
| 大脑币498元 | $69.99 | one-time |
| 大脑币698元 | $99.99 | one-time |
| 大脑币1488元 | $199.99 | one-time |


## Frequently asked questions

### Is 知呀 free?

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

### Is 大脑营行 free?

大脑营行 is free to download, with in-app purchases available.

### Do 知呀 or 大脑营行 have ads?

大脑营行 shows ads; 知呀 does not.

### Which is updated more often, 知呀 or 大脑营行?

知呀 ships an update every 3 weeks, and 大脑营行 every 3 weeks. Most recently, 知呀 was updated on November 7, 2026 and 大脑营行 on November 7, 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.*