# 洪泽排水 vs B

The clearest difference is iOS requirement: 洪泽排水 at 11.0 against B's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

洪泽排水 ships an update every 6 weeks, B monthly. Both last shipped on October 30, 2026.

## The numbers

| Metric | 洪泽排水 | B |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Size | 75 MB | 27 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [苏交科集团股份有限公司](https://appshunter.io/developer/1374918144) | [无锡宝通智能物联科技有限公司](https://appshunter.io/developer/1576279743) |

## What reviewers say

### 洪泽排水

[App page](https://appshunter.io/ios/app/id1619742083)

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

**In-app purchases:** none


### B

[App page](https://appshunter.io/ios/app/b-techsupra/id6677011773)

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

**In-app purchases:** none


## Frequently asked questions

### Is 洪泽排水 free?

洪泽排水 is free to download, with no in-app purchases.

### Is B free?

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

### Do 洪泽排水 or B have ads?

Neither 洪泽排水 nor B shows ads.

### Which is updated more often, 洪泽排水 or B?

洪泽排水 ships an update every 6 weeks, and B monthly. Most recently, 洪泽排水 was updated on October 30, 2026 and B on October 30, 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.*