# 日本リウマチ学会 公式アプリ「JCR」 vs Casey English Prep

The clearest difference is in-app purchases: 日本リウマチ学会 公式アプリ「JCR」 at none against Casey English Prep's 2. Casey English Prep's advantage is update cadence (daily vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Casey English Prep sells 2 in-app purchases, starting at $2.99 per month. 日本リウマチ学会 公式アプリ「JCR」 asks for nothing beyond the download.

日本リウマチ学会 公式アプリ「JCR」 ships an update every 10 months, Casey English Prep daily. The most recent releases landed on November 4, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 日本リウマチ学会 公式アプリ「JCR」 | Casey English Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/casey-english-prep/id6772589612/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Daily** |
| Monetization | — | Freemium |
| Size | 5 MB | 10 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Japan College of Rheumatology](https://appshunter.io/developer/1716460239) | [Ishify LLC](https://appshunter.io/developer/6772525984) |

## What reviewers say

### 日本リウマチ学会 公式アプリ「JCR」

[App page](https://appshunter.io/ios/app/jcr/id6472007947)

**Features:** macOS Compatibility

**In-app purchases:** none


### Casey English Prep

[App page](https://appshunter.io/ios/app/casey-english-prep/id6772589612)

This app helps medical professionals learn essential English phrases for interacting with foreign patients and colleagues. It offers short, daily lessons covering scenarios from patient interviews to academic presentations, with a focus on practical application in healthcare settings.

**Highlights:** Daily 5-minute lessons, Scenario-based learning, Role-specific content, Interactive exercises, Spaced repetition for review, Progress tracking and rankings, Pronunciation and nuance explanations

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus（月額） | $2.99 | per month |
| Plus（年額） | $24.99 | per year |


## Frequently asked questions

### Is 日本リウマチ学会 公式アプリ「JCR」 free?

日本リウマチ学会 公式アプリ「JCR」 is free to download, with no in-app purchases.

### Is Casey English Prep free?

Casey English Prep is free to download, with in-app purchases available.

### Do 日本リウマチ学会 公式アプリ「JCR」 or Casey English Prep have ads?

Neither 日本リウマチ学会 公式アプリ「JCR」 nor Casey English Prep shows ads.

### Which is updated more often, 日本リウマチ学会 公式アプリ「JCR」 or Casey English Prep?

日本リウマチ学会 公式アプリ「JCR」 ships an update every 10 months, and Casey English Prep daily. Most recently, 日本リウマチ学会 公式アプリ「JCR」 was updated on November 4, 2026 and Casey English Prep on November 7, 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.*