# COCA词频单词 vs 小词书

The clearest difference is price: 小词书 at Free against COCA词频单词's $7.99. 小词书 also leads on update cadence (weekly vs every 6 weeks). COCA词频单词's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 17.0). On ads and device support there is nothing between them.

小词书 is free to download; COCA词频单词 costs $7.99 up front. 小词书 sells 1 one-off in-app purchase. COCA词频单词 asks for nothing beyond the download.

COCA词频单词 ships an update every 6 weeks, 小词书 weekly. The most recent releases landed on September 16, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | COCA词频单词 | 小词书 |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/a4/id6751853827/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Paid | **Free** |
| Size | 105 MB | 35 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [坤 徐](https://appshunter.io/developer/1490871013) | [金超 杜](https://appshunter.io/developer/1813785741) |

## 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


### 小词书

[App page](https://appshunter.io/ios/app/a4/id6751853827)

This app simplifies vocabulary learning with intuitive swipe gestures, mimicking a proven A4 paper method. It utilizes spaced repetition and focus modes to enhance memorization without distractions like scores or leaderboards. Users can learn from built-in or custom word lists and track progress visually.

**Highlights:** Intuitive swipe gestures for learning, Spaced repetition algorithm, Focus modes for distraction-free study, Built-in and custom word lists, Progress tracking with heatmaps and charts, Customizable interface and automatic backup

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 小词书Plus | $4.99 | 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 小词书 free?

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

### Do COCA词频单词 or 小词书 have ads?

Neither COCA词频单词 nor 小词书 shows ads.

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

COCA词频单词 ships an update every 6 weeks, and 小词书 weekly. Most recently, COCA词频单词 was updated on September 16, 2026 and 小词书 on September 13, 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.*