# K线制胜 vs 随牛AI

The clearest difference is ads: 随牛AI at none against K线制胜's shown. 随牛AI also leads on update cadence (weekly vs every 4 months) and iOS requirement (15.6 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. K线制胜 sells 1 one-off in-app purchase and 随牛AI sells 14 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

K线制胜 ships an update every 4 months, 随牛AI weekly. The most recent releases landed on September 27, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | K线制胜 | 随牛AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 93 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [乃 樊](https://appshunter.io/developer/492477721) | [厦门市鑫鼎盛控股有限公司](https://appshunter.io/developer/1304077444) |

## What reviewers say

### K线制胜

[App page](https://appshunter.io/ios/app/k-k/id991554330)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 去除广告插件 | $3.99 | 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 K线制胜 free?

K线制胜 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 K线制胜 or 随牛AI have ads?

K线制胜 shows ads; 随牛AI does not.

### Which is updated more often, K线制胜 or 随牛AI?

K线制胜 ships an update every 4 months, and 随牛AI weekly. Most recently, K线制胜 was updated on September 27, 2026 and 随牛AI on September 22, 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.*