# 开开心心背单词 vs US Citizenship Test 2026 App

The clearest difference is in-app purchases: 开开心心背单词 at none against US Citizenship Test 2026 App's 3. 开开心心背单词 also leads on iOS requirement (12.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. US Citizenship Test 2026 App sells 3 in-app purchases, starting at $2.99 per 7 days. 开开心心背单词 asks for nothing beyond the download.

## The numbers

| Metric | 开开心心背单词 | US Citizenship Test 2026 App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (19 ratings)](https://appshunter.io/ios/app/us-citizenship-test-2026-app/id6748588043/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 8 days |
| Monetization | — | Freemium |
| Size | 47 MB | 97 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [光平 王](https://appshunter.io/developer/1045947341) | [Vishwen Labs (OPC) Private Limited](https://appshunter.io/developer/1826427637) |

## What reviewers say

### 开开心心背单词

[App page](https://appshunter.io/ios/app/id6480445030)

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

**In-app purchases:** none


### US Citizenship Test 2026 App

[App page](https://appshunter.io/ios/app/us-citizenship-test-2026-app/id6748588043)

Prepare for the US citizenship test with comprehensive study materials and realistic interview practice. Access all official questions, track your progress, and study in multiple languages to build confidence for your naturalization interview.

**Highlights:** Updated 2025 USCIS test questions, Realistic voice interview simulation, Study in 10 languages, Reading & writing practice, Progress tracking, CarPlay support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $2.99 | per 7 days |
| Unlimited Access | $9.99 | per month |
| Unlimited Access | $24.99 | per year |


## Frequently asked questions

### Is 开开心心背单词 free?

开开心心背单词 is free to download, with no in-app purchases.

### Is US Citizenship Test 2026 App free?

US Citizenship Test 2026 App is free to download, with in-app purchases available.

### Do 开开心心背单词 or US Citizenship Test 2026 App have ads?

Neither 开开心心背单词 nor US Citizenship Test 2026 App shows ads.

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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.*