# 氢氧水 vs 购省鸭

The clearest difference is ads: 购省鸭 at none against 氢氧水's shown. 购省鸭 also leads on update cadence (fortnightly vs every 3 months). 氢氧水's advantage is iOS requirement (11.0 vs 13.0). On price, 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.

氢氧水 ships an update every 3 months, 购省鸭 fortnightly. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 氢氧水 | 购省鸭 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6475278834/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 68 MB | 41 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [佩婷 王](https://appshunter.io/developer/1544651210) | [Hangzhou Goushen Network Technology Co., Ltd.](https://appshunter.io/developer/1723804803) |

## What reviewers say

### 氢氧水

[App page](https://appshunter.io/ios/app/id1544754047)

**Features:** macOS Compatibility

**In-app purchases:** none


### 购省鸭

[App page](https://appshunter.io/ios/app/id6475278834)

This app aggregates coupons and offers from major e-commerce and lifestyle platforms. It helps users find hidden discounts and earn money by sharing products or making purchases, turning online shopping into a profitable activity.

**Highlights:** Aggregates coupons from major platforms, Finds hidden discounts, Earns revenue by sharing products, Provides rebates on orders, Offers discounts on various life services

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

**In-app purchases:** none


## Frequently asked questions

### Is 氢氧水 free?

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

### Is 购省鸭 free?

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

### Do 氢氧水 or 购省鸭 have ads?

氢氧水 shows ads; 购省鸭 does not.

### Which is updated more often, 氢氧水 or 购省鸭?

氢氧水 ships an update every 3 months, and 购省鸭 fortnightly. Most recently, 氢氧水 was updated on November 7, 2026 and 购省鸭 on November 4, 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.*