# COCA词频单词 vs Arithmetic Worksheet

The clearest difference is price: Arithmetic Worksheet at Free against COCA词频单词's $7.99. COCA词频单词's advantage is update cadence (every 6 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Arithmetic Worksheet is free to download; COCA词频单词 costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

COCA词频单词 ships an update every 6 weeks, Arithmetic Worksheet every 4 months. The most recent releases landed on September 16, 2026 and February 27, 2026 respectively.

## The numbers

| Metric | COCA词频单词 | Arithmetic Worksheet |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Paid | — |
| Size | 105 MB | 87 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [坤 徐](https://appshunter.io/developer/1490871013) | [Yan Xu](https://appshunter.io/developer/1503643654) |

## 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


### Arithmetic Worksheet

[App page](https://appshunter.io/ios/app/arithmetic-worksheet/id6473706462)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is COCA词频单词 free?

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

### Is Arithmetic Worksheet free?

Arithmetic Worksheet is free to download, with no in-app purchases.

### Do COCA词频单词 or Arithmetic Worksheet have ads?

Neither COCA词频单词 nor Arithmetic Worksheet shows ads.

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

COCA词频单词 ships an update every 6 weeks, and Arithmetic Worksheet every 4 months. Most recently, COCA词频单词 was updated on September 16, 2026 and Arithmetic Worksheet on February 27, 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.*