# Osmosis vs Radiant Notes eLibrary

The clearest difference is rating: Osmosis at 4.8 against Radiant Notes eLibrary's 3.7. Osmosis also leads on ratings volume (3.9K vs 3) and chart position (#90 vs unranked). Radiant Notes eLibrary's advantage is update cadence (every 9 days vs monthly) and iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Osmosis sells 12 in-app purchases, starting at $16.99 per month and Radiant Notes eLibrary sells 4 in-app purchases, starting at $9.99 per 3 months. Whichever you choose, the download price is not the number that matters.

Osmosis holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Osmosis has 3.9K ratings behind it against 3, so its average is the more settled of the two.

Osmosis ships an update monthly, Radiant Notes eLibrary every 9 days. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Osmosis | Radiant Notes eLibrary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.9K ratings)](https://appshunter.io/ios/app/osmosis-med-school-study-app/id646540641/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/radiant-notes-elibrary/id6754548485/reviews) |
| Number of ratings | **3.9K** | 3 |
| Positive reviews | 47.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | **#90** | — |
| Size | 70 MB | 131 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Knowledge Diffusion](https://appshunter.io/developer/646540644) | [Rafi Ullah](https://appshunter.io/developer/1848798149) |

## What reviewers say

### Osmosis

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

**Currently charting:** #90 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


### Radiant Notes eLibrary

[App page](https://appshunter.io/ios/app/radiant-notes-elibrary/id6754548485)

This app provides structured notes, practice questions, and mock exams for medical students and healthcare professionals. It includes treatment guides and a PDF reader for efficient study and exam preparation.

**Highlights:** High-yield structured notes, Organized MCQ practice, Mock exams and self-assessment, Treatment and management guides, PDF reading experience

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Month Subscription | $9.99 | per 3 months |
| Half Year Subscription | $17.99 | per 6 months |
| Annual Subscription | $24.99 | per year |
| Lifetime Full Access | $33.99 | one-time |


## Frequently asked questions

### Is Osmosis free?

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

### Is Radiant Notes eLibrary free?

Radiant Notes eLibrary is free to download, with in-app purchases available.

### Which has better reviews, Osmosis or Radiant Notes eLibrary?

Osmosis is rated higher. Osmosis averages 4.8 out of 5 from 3.9K ratings, while Radiant Notes eLibrary averages 3.7 from 3 ratings.

### Do Osmosis or Radiant Notes eLibrary have ads?

Neither Osmosis nor Radiant Notes eLibrary shows ads.

### Which is updated more often, Osmosis or Radiant Notes eLibrary?

Osmosis ships an update monthly, and Radiant Notes eLibrary every 9 days. Most recently, Osmosis was updated on October 29, 2026 and Radiant Notes eLibrary on October 28, 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.*