# OpenABC vs Ogden 850

The clearest difference is update cadence: OpenABC at every 3 days against Ogden 850's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. OpenABC sells 1 one-off in-app purchase and Ogden 850 sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

OpenABC ships an update every 3 days, Ogden 850 every 3 weeks. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OpenABC | Ogden 850 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/openabc/id6789418205/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 357 MB | 804 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [帅 周](https://appshunter.io/developer/6789373257) | [小琦 王](https://appshunter.io/developer/1894109384) |

## What reviewers say

### OpenABC

[App page](https://appshunter.io/ios/app/openabc/id6789418205)

This app offers a comprehensive language learning path, integrating listening, speaking, reading, and writing. It uses visual aids, handwriting recognition, and pronunciation feedback to help users master new vocabulary and grammar in context. Content adapts to the learner's level and includes various practice modes.

**Highlights:** Visual word learning, Handwriting dictation, Pronunciation feedback, Contextual grammar practice, Offline content access, Multiple learner profiles

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁完整版 | $3.99 | one-time |


### Ogden 850

[App page](https://appshunter.io/ios/app/ogden-850-basic-english/id6800209525)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Writing Monthly | $0.99 | per month |
| Kay Support | $1.99 | per month |


## Frequently asked questions

### Is OpenABC free?

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

### Is Ogden 850 free?

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

### Do OpenABC or Ogden 850 have ads?

Neither OpenABC nor Ogden 850 shows ads.

### Which is updated more often, OpenABC or Ogden 850?

OpenABC ships an update every 3 days, and Ogden 850 every 3 weeks. Most recently, OpenABC was updated on October 31, 2026 and Ogden 850 on October 24, 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.*