# Bala量化 vs Stock AI

The clearest difference is in-app purchases: Stock AI at none against Bala量化's 6. Bala量化's advantage is update cadence (every 6 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Bala量化 sells 6 in-app purchases, starting at $3.99 per month. Stock AI asks for nothing beyond the download.

Bala量化 ships an update every 6 days, Stock AI every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Bala量化 | Stock AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Size | 27 MB | 8 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [晓东 陈](https://appshunter.io/developer/849609408) | [华 江](https://appshunter.io/developer/952743020) |

## What reviewers say

### Bala量化

[App page](https://appshunter.io/ios/app/bala/id6766252962)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 普通会员 - 1个月 | $3.99 | per month |
| Plus 会员 - 1个月 | $9.99 | per month |
| Pro 会员 - 1个月 | $14.99 | per month |
| 普通会员 - 12个月 | $39.99 | per year |
| Plus 会员 - 12个月 | $99.99 | per year |
| Pro 会员 - 12个月 | $149.99 | per year |


### Stock AI

[App page](https://appshunter.io/ios/app/stock-ai/id6790083682)

**In-app purchases:** none


## Frequently asked questions

### Is Bala量化 free?

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

### Is Stock AI free?

Stock AI is free to download, with no in-app purchases.

### Do Bala量化 or Stock AI have ads?

Neither Bala量化 nor Stock AI shows ads.

### Which is updated more often, Bala量化 or Stock AI?

Bala量化 ships an update every 6 days, and Stock AI every 3 weeks. Most recently, Bala量化 was updated on October 31, 2026 and Stock AI on October 31, 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.*