# Osmosis vs X

The clearest difference is in-app purchases: X at none against Osmosis's 14. X also leads on update cadence (every 8 days vs monthly). Osmosis's advantage is ratings volume (3.9K vs 1) and chart position (#67 vs unranked). On price, rating, ads and device support there is nothing between them.

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

X holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Osmosis has 3.9K ratings behind it against 1, so its average is the more settled of the two.

Osmosis ships an update monthly, X every 8 days. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Osmosis | X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (3.9K ratings)](https://appshunter.io/ios/app/osmosis-med-school-study-app/id646540641/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/x-plain/id898690322/reviews)** |
| Number of ratings | **3.9K** | 1 |
| Positive reviews | 47.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#67** | — |
| Size | 70 MB | 2 MB |
| Requires iOS | **16.6** | 18.5 |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Knowledge Diffusion](https://appshunter.io/developer/646540644) | [PATIENT EDUCATION INSTITUTE INC](https://appshunter.io/developer/889646362) |

## What reviewers say

### Osmosis

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

**Currently charting:** #67 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


### X

[App page](https://appshunter.io/ios/app/x-plain/id898690322)

This medical education app offers a vast library of narrated tutorials covering numerous specialties. It's designed for healthcare settings to help patients understand medical conditions and treatments through interactive learning.

**Highlights:** Narrated educational tutorials, Interactive quizzes with feedback, Covers 35 medical specialties, Over 1100 English titles, Over 500 Spanish titles, Self-paced learning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Osmosis free?

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

### Is X free?

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

### Which has better reviews, Osmosis or X?

X is rated higher. Osmosis averages 4.8 out of 5 from 3.9K ratings, while X averages 5.0 from 1 ratings.

### Do Osmosis or X have ads?

Neither Osmosis nor X shows ads.

### Which is updated more often, Osmosis or X?

Osmosis ships an update monthly, and X every 8 days. Most recently, Osmosis was updated on October 26, 2026 and X on October 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.*