# 量投筋斗云 vs E

The clearest difference is update cadence: 量投筋斗云 at every 4 days against E's every 2 weeks. E's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

量投筋斗云 ships an update every 4 days, E every 2 weeks. The most recent releases landed on September 11, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 量投筋斗云 | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 weeks |
| Size | 90 MB | 31 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [QuantDo Technology (Shanghai) Co., Ltd](https://appshunter.io/developer/1095535218) | [MAF Intelligence Pte Ltd](https://appshunter.io/developer/1619248129) |

## What reviewers say

### 量投筋斗云

[App page](https://appshunter.io/ios/app/id1587648528)

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

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-phy-trading/id6745169775)

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

**In-app purchases:** none


## Frequently asked questions

### Is 量投筋斗云 free?

量投筋斗云 is free to download, with no in-app purchases.

### Is E free?

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

### Do 量投筋斗云 or E have ads?

Neither 量投筋斗云 nor E shows ads.

### Which is updated more often, 量投筋斗云 or E?

量投筋斗云 ships an update every 4 days, and E every 2 weeks. Most recently, 量投筋斗云 was updated on September 11, 2026 and E on September 10, 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.*