# 能量库 vs BE850 Ogden's Basic English

The clearest difference is in-app purchases: BE850 Ogden's Basic English at none against 能量库's 10. 能量库's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. 能量库 sells 10 one-off in-app purchases. BE850 Ogden's Basic English asks for nothing beyond the download.

## The numbers

| Metric | 能量库 | BE850 Ogden's Basic English |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/be850-ogdens-basic-english/id6775118069/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | — | Free |
| Size | 14 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [杭州四域文化创意有限公司](https://appshunter.io/developer/1304082204) | [ZHIXIANG LING](https://appshunter.io/developer/1896707855) |

## What reviewers say

### 能量库

[App page](https://appshunter.io/ios/app/id1304082205)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 60U币 | $0.99 | one-time |
| 120U币 | $1.99 | one-time |
| 720U币 | $8.99 | one-time |
| 1400U币 | $14.99 | one-time |
| 1290U币 | $18.99 | one-time |
| 2760U币 | $29.99 | one-time |
| 2560U币 | $35.99 | one-time |
| 5280U币 | $74.99 | one-time |
| 8250U币 | $89.99 | one-time |
| 14720U币 | $149.99 | one-time |


### BE850 Ogden's Basic English

[App page](https://appshunter.io/ios/app/be850-ogdens-basic-english/id6775118069)

This digital handbook teaches English using C.K. Ogden's 850 core words. It offers bilingual definitions, pronunciation guides, and flashcard practice for effective vocabulary building. Learn anytime, anywhere with offline access.

**Highlights:** 850 core English words, Bilingual definitions (Chinese/English), UK & US pronunciation, IPA phonetics, Flashcard practice mode, Progress tracking, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is 能量库 free?

能量库 is free to download, with in-app purchases available.

### Is BE850 Ogden's Basic English free?

BE850 Ogden's Basic English is free to download, with no in-app purchases.

### Do 能量库 or BE850 Ogden's Basic English have ads?

Neither 能量库 nor BE850 Ogden's Basic English shows ads.

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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.*