# 买卖时机 vs 随牛AI

The clearest difference is update cadence: 随牛AI at weekly against 买卖时机's every 3 months. 买卖时机's advantage is review sentiment (89% vs 71%) and iOS requirement (8.1 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 买卖时机 sells 3 one-off in-app purchases and 随牛AI sells 14 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

买卖时机 ships an update every 3 months, 随牛AI weekly. The most recent releases landed on October 29, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 买卖时机 | 随牛AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (48 ratings)](https://appshunter.io/ios/app/id963664701/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | **89.1% of reviews** | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 30 MB | 93 MB |
| Requires iOS | **8.1** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [冰 项](https://appshunter.io/developer/1240197988) | [厦门市鑫鼎盛控股有限公司](https://appshunter.io/developer/1304077444) |

## What reviewers say

### 买卖时机

[App page](https://appshunter.io/ios/app/id963664701)

This app leverages big data and AI to provide real-time stock trading signals and recommendations. It offers advanced indicators, automated stock selection, and timely market intelligence to help users make informed investment decisions.

**Highlights:** Real-time stock trading signals, Big data analysis, AI-powered stock selection, Advanced trading indicators (BS points, volume), Industry intelligence and financial news, Automated buy/sell recommendations

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 专业版 | $149.99 | one-time |
| 黑马会 | $149.99 | one-time |
| 圈子 | $799.99 | one-time |


### 随牛AI

[App page](https://appshunter.io/ios/app/ai/id1316839929)

This app offers AI-powered investment advice for stocks and funds. It utilizes advanced AI models and expert financial insights to help users make informed and rational investment decisions.

**Highlights:** AI-powered investment advice, Intelligent quantitative analysis, AI panoramic decision-making system, Access to authoritative data sources, Expert financial and AI team, Licensed and compliant platform

**Features:** macOS Compatibility

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6牛币 | $0.99 | one-time |
| 50牛币 | $7.99 | one-time |
| 股票VIP会员1周套餐 | $9.99 | one-time |
| 100牛币 | $14.99 | one-time |
| 1个月会员 | $20.99 | one-time |
| 股票VIP会员1个月套餐 | $39.99 | one-time |
| 股票VIP会员3个月套餐 | $59.99 | one-time |
| 股票VIP会员6个月套餐 | $99.99 | one-time |
| 6个月会员 | $109.99 | one-time |
| 股票VIP会员12个月套餐 | $149.99 | one-time |
| 12个月会员 | $189.99 | one-time |
| 股票VIP会员24个月套餐 | $199.99 | one-time |
| 投顾知识套餐 | $399.99 | one-time |
| 投顾高级知识套餐 | $599.99 | one-time |


## Frequently asked questions

### Is 买卖时机 free?

买卖时机 is free to download, with in-app purchases available.

### Is 随牛AI free?

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

### Do 买卖时机 or 随牛AI have ads?

Neither 买卖时机 nor 随牛AI shows ads.

### Which is updated more often, 买卖时机 or 随牛AI?

买卖时机 ships an update every 3 months, and 随牛AI weekly. Most recently, 买卖时机 was updated on October 29, 2026 and 随牛AI on October 9, 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.*