# Osmosis vs JRCALC PLUS

The clearest difference is in-app purchases: JRCALC PLUS at none against Osmosis's 14. Osmosis's advantage is review sentiment (47% vs 23%) and update cadence (monthly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Osmosis sells 12 in-app purchases, starting at $16.99 per month. JRCALC PLUS asks for nothing beyond the download.

Osmosis ships an update monthly, JRCALC PLUS every 2 months. Both last shipped on October 29, 2026.

## The numbers

| Metric | Osmosis | JRCALC PLUS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.9K ratings)](https://appshunter.io/ios/app/osmosis-med-school-study-app/id646540641/reviews)** | — |
| Number of ratings | **3.9K** | — |
| Positive reviews | **47.4% of reviews** | 23.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#102** | — |
| Size | 70 MB | 270 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Knowledge Diffusion](https://appshunter.io/developer/646540644) | [Class Publishing Ltd](https://appshunter.io/developer/884962940) |

## What reviewers say

### Osmosis

[App page](https://appshunter.io/ios/app/osmosis-med-school-study-app/id646540641)

**Currently charting:** #102 Top Grossing · Medical (US App Store)

This app helps medical students learn complex concepts faster and retain more information. It offers animated videos, flashcards, notes, and board-style questions to prepare for exams and build clinical skills.

**Highlights:** Animated medical videos, Spaced repetition flashcards, Board-style practice questions, Downloadable notes and videos, Clinical decision-making trees, Cross-platform syncing

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Osmosis Full Access Monthly | $16.99 | per month |
| Clinical Sciences Monthly | $16.99 | per month |
| Osmosis Basic Sciences Monthly | $16.99 | per month |
| Osmosis Suite Access Monthly | $49.00 | per month |
| Clinical Science 6 Month | $129.00 | per 6 months |
| Clinical Science Access Yearly | $169.00 | per year |
| Basic Sciences Access 6 Month | $179.00 | per 6 months |
| Osmosis Full Access 6 Month | $179.99 | per 6 months |
| Osmosis Full Access Yearly | $199.99 | per year |
| Basic Sciences Access Yearly | $199.99 | per year |
| Osmosis Suite Access 6 Month | $229.00 | per 6 months |
| Osmosis Suite Access Yearly | $249.00 | per year |

**What reviewers like**

- 🚀 Great study tool
- 💡 Helpful videos and flashcards
- 👍 Engaging and easy to understand content
- 🚀 Efficient for on-the-go learning
- 👍 Customizable study experience

**What reviewers complain about**

- 🐛 Buggy app with crashes and glitches
- 🔋 Offline functionality issues
- 👎 Limited features compared to website
- 👎 Subscription confusion and billing issues
- 👎 Slow and unresponsive app performance

**Reported bugs**

- Verification email never sent
- Videos won't play or keep restarting
- Inability to access high-yield notes on app
- Flashcards and quizzes not working properly
- App getting stuck on loading/login screens

**Requested features**

- Add speech pathology to the platform
- Provide Arabic subtitles for videos
- Implement split-screen functionality
- Allow editing of flashcards on mobile
- Improve search and playlist features


### JRCALC PLUS

[App page](https://appshunter.io/ios/app/jrcalc-plus/id1317027458)

Access up-to-date national and regional prehospital care guidelines for UK professionals. This app provides essential clinical information, including medicines tables and algorithms, for registered trust members. It works offline, ensuring access to critical guidance even without a signal.

**Highlights:** Complete JRCALC Guidelines, Regional and local guidance, Clinical Notices for trusts, Medicines tables, algorithms, and advice, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Osmosis free?

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

### Is JRCALC PLUS free?

JRCALC PLUS is free to download, with no in-app purchases.

### Do Osmosis or JRCALC PLUS have ads?

Neither Osmosis nor JRCALC PLUS shows ads.

### Which is updated more often, Osmosis or JRCALC PLUS?

Osmosis ships an update monthly, and JRCALC PLUS every 2 months. Most recently, Osmosis was updated on October 29, 2026 and JRCALC PLUS on October 29, 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.*