# COCA词频单词 vs Adolf

The clearest difference is review sentiment: COCA词频单词 at 43% against Adolf's 0%. COCA词频单词 also leads on in-app purchases (none vs 3) and iOS requirement (11.0 vs 14.0). Adolf's advantage is price ($0.99 vs $7.99) and update cadence (fortnightly vs every 6 weeks). On ads, monetization model and device support there is nothing between them.

COCA词频单词 costs $7.99 and Adolf $0.99 up front. Adolf sells 3 one-off in-app purchases. COCA词频单词 asks for nothing beyond the download.

COCA词频单词 ships an update every 6 weeks, Adolf fortnightly. The most recent releases landed on September 16, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | COCA词频单词 | Adolf |
| --- | --- | --- |
| Price | $7.99 | **$0.99** |
| Rating | — | **[1.5 (2 ratings)](https://appshunter.io/ios/app/adolf-word-learning/id6445839777/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **42.9% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 105 MB | 12 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [坤 徐](https://appshunter.io/developer/1490871013) | [金凯 朱](https://appshunter.io/developer/1662294864) |

## What reviewers say

### COCA词频单词

[App page](https://appshunter.io/ios/app/coca/id1490871014)

Master English vocabulary with a frequency-based approach. This app provides detailed explanations, synonyms, and example sentences for thousands of the most common words, aiding efficient learning and retention.

**Highlights:** 17,631 COCA-ranked words, Detailed explanations, synonyms, and examples, Audio pronunciation, Grouped learning by 1000-word intervals, Offline dictionary access, Progress tracking and learned word filtering

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

**In-app purchases:** none


### Adolf

[App page](https://appshunter.io/ios/app/adolf-word-learning/id6445839777)

Learn English vocabulary by listening to words and their translations. This app is designed to help you memorize new words effortlessly, making it ideal for improving listening skills during everyday activities or as a relaxation tool.

**Highlights:** Listen to word pronunciations, View word translations, Choose from different word lists, Learn passively while multitasking, Use as a relaxation aid

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 基础套餐 | $0.99 | one-time |
| 优惠套餐 | $4.99 | one-time |
| 最惠套餐 | $8.99 | one-time |


## Frequently asked questions

### Is COCA词频单词 free?

COCA词频单词 costs $7.99, with no in-app purchases.

### Is Adolf free?

Adolf costs $0.99, and also offers in-app purchases.

### Do COCA词频单词 or Adolf have ads?

Neither COCA词频单词 nor Adolf shows ads.

### Which is updated more often, COCA词频单词 or Adolf?

COCA词频单词 ships an update every 6 weeks, and Adolf fortnightly. Most recently, COCA词频单词 was updated on September 16, 2026 and Adolf on June 1, 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.*