# 河马英文阅读器 (Hippo Reader) vs 嗯背单词

The clearest difference is price: 嗯背单词 at Free against 河马英文阅读器 (Hippo Reader)'s $0.99. 嗯背单词 also leads on ads (none vs shown) and update cadence (every 8 days vs every 6 weeks). 河马英文阅读器 (Hippo Reader)'s advantage is in-app purchases (none vs 5) and review sentiment (94% vs 86%). On rating, ratings volume and device support there is nothing between them.

嗯背单词 is free to download; 河马英文阅读器 (Hippo Reader) costs $0.99 up front. 嗯背单词 sells 5 in-app purchases, starting at $0.99 per month. 河马英文阅读器 (Hippo Reader) asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for 河马英文阅读器 (Hippo Reader) against 4.8 for 嗯背单词. Both are backed by a comparable volume of ratings — 41 and 87 respectively. Written reviews are what separate them: 94% of 河马英文阅读器 (Hippo Reader)'s written reviews are positive against 86% of 嗯背单词's.

河马英文阅读器 (Hippo Reader) ships an update every 6 weeks, 嗯背单词 every 8 days. Both last shipped on September 29, 2026.

## The numbers

| Metric | 河马英文阅读器 (Hippo Reader) | 嗯背单词 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.8 (41 ratings)](https://appshunter.io/ios/app/hippo-reader/id1579211407/reviews) | [4.8 (87 ratings)](https://appshunter.io/ios/app/id6450109182/reviews) |
| Number of ratings | 41 | **87** |
| Positive reviews | **94.3% of reviews** | 85.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 57 MB | 36 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [LexyTech Ltd.](https://appshunter.io/developer/1643712954) | [斌斌 沈](https://appshunter.io/developer/1509733863) |

## What reviewers say

### 河马英文阅读器 (Hippo Reader)

[App page](https://appshunter.io/ios/app/hippo-reader/id1579211407)

This app offers a minimalist English e-book reader for an immersive reading experience. It allows users to easily look up word meanings, translate sentences, and access various dictionary definitions with a simple tap or double-tap. Features include offline reading, customizable fonts, and note-taking capabilities.

**Highlights:** Integrated dictionary and translation, Offline reading support, Customizable fonts and reading styles, Note-taking and export, Vocabulary analysis by level, Web page reading with word lookup

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

**In-app purchases:** none


### 嗯背单词

[App page](https://appshunter.io/ios/app/id6450109182)

This app uses a unique state machine algorithm to dramatically increase vocabulary learning efficiency. It offers a minimalist design, single-handed operation, and flexible review options without forced repetition. Users can also add notes, use an integrated dictionary, and import custom word lists.

**Highlights:** State machine algorithm for efficient memorization, Minimalist SwiftUI native design, Single-handed operation, Flexible review without forced repetition, Integrated online dictionary with images and encyclopedic content, Customizable word lists and notes, Word radio feature

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $0.99 | per month |
| 年度会员 | $9.99 | per year |
| 终身会员 | Free | one-time |
| 终身会员 | $4.99 | one-time |
| 终身会员 | $6.99 | one-time |


## Frequently asked questions

### Is 河马英文阅读器 (Hippo Reader) free?

河马英文阅读器 (Hippo Reader) costs $0.99, with no in-app purchases.

### Is 嗯背单词 free?

嗯背单词 is free to download, with in-app purchases available.

### Which has better reviews, 河马英文阅读器 (Hippo Reader) or 嗯背单词?

河马英文阅读器 (Hippo Reader) and 嗯背单词 are both rated 4.8 out of 5 on the App Store, from 41 and 87 ratings respectively.

### Do 河马英文阅读器 (Hippo Reader) or 嗯背单词 have ads?

河马英文阅读器 (Hippo Reader) shows ads; 嗯背单词 does not.

### Which is updated more often, 河马英文阅读器 (Hippo Reader) or 嗯背单词?

河马英文阅读器 (Hippo Reader) ships an update every 6 weeks, and 嗯背单词 every 8 days. Most recently, 河马英文阅读器 (Hippo Reader) was updated on September 29, 2026 and 嗯背单词 on September 29, 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.*