# Kay English Learning vs Basic 850

The clearest difference is update cadence: Kay English Learning at every 5 days against Basic 850's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Kay English Learning sells 7 in-app purchases, starting at $0.99 per month and Basic 850 sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Kay English Learning ships an update every 5 days, Basic 850 every 4 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Kay English Learning | Basic 850 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/kay-english-learning/id6774189238/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 4 months |
| Monetization | Free | — |
| Size | 433 MB | 184 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [小琦 王](https://appshunter.io/developer/1894109384) | [宝 谢](https://appshunter.io/developer/6773539519) |

## What reviewers say

### Kay English Learning

[App page](https://appshunter.io/ios/app/kay-english-learning/id6774189238)

Master essential English vocabulary with a focused approach. This app utilizes C.K. Ogden's 850 core words, offering definitions, audio, flashcards, and practice exercises to build a strong foundation for reading and everyday communication.

**Highlights:** Offline 850-word library, IPA and US/UK audio pronunciation, Flashcard practice, Immersion mode, Synonym notes, Phrase patterns and memory stories, Daily progress tracking

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Writing Monthly | $0.99 | per month |
| Kay Support | $1.99 | per month |
| Monthly | $1.99 | per month |
| AI Pro+ | $3.99 | per month |
| 3 Months | $5.99 | per 3 months |
| Yearly | $12.99 | per year |
| Kay Pro Lifetime | $52.99 | one-time |


### Basic 850

[App page](https://appshunter.io/ios/app/basic-850/id6774764253)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic 850 Plus (Monthly) | $2.99 | per month |
| Basic 850 Plus (Yearly) | $19.99 | per year |
| Basic 850 Plus（買い切り） | $29.99 | one-time |


## Frequently asked questions

### Is Kay English Learning free?

Kay English Learning is free to download, with in-app purchases available.

### Is Basic 850 free?

Basic 850 is free to download, with in-app purchases available.

### Do Kay English Learning or Basic 850 have ads?

Neither Kay English Learning nor Basic 850 shows ads.

### Which is updated more often, Kay English Learning or Basic 850?

Kay English Learning ships an update every 5 days, and Basic 850 every 4 months. Most recently, Kay English Learning was updated on October 9, 2026 and Basic 850 on October 6, 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.*