# Osmosis vs Histology Complete

The clearest difference is in-app purchases: Histology Complete at none against Osmosis's 10. Histology Complete also leads on review sentiment (67% vs 47%) and iOS requirement (9.0 vs 16.6). Osmosis's advantage is rating (4.8 vs 4.4) and update cadence (monthly vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. Osmosis sells 10 in-app purchases, starting at $16.99 per month. Histology Complete asks for nothing beyond the download.

Osmosis holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Osmosis has 3.9K ratings behind it against 21, so its average is the more settled of the two. Written reviews complicate that: 47% of Osmosis's written reviews are positive against 67% of Histology Complete's, so the app with the better star average is not the one people write more warmly about.

Osmosis ships an update monthly, Histology Complete every 8 months. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Osmosis | Histology Complete |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.9K ratings)](https://appshunter.io/ios/app/osmosis-med-school-study-app/id646540641/reviews)** | [4.4 (21 ratings)](https://appshunter.io/ios/app/histology-complete-secondlook/id1010753597/reviews) |
| Number of ratings | **3.9K** | 21 |
| Positive reviews | 47.4% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 8 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#69** | — |
| Size | 70 MB | 125 MB |
| Requires iOS | 16.6 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Knowledge Diffusion](https://appshunter.io/developer/646540644) | [The University of Michigan](https://appshunter.io/developer/380339599) |

## What reviewers say

### Osmosis

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

**Currently charting:** #69 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 (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Osmosis Full Access Monthly | $16.99 | per month |
| Osmosis Suite Access Monthly | $49.00 | per month |
| Clinical Science 6 Month | $129.00 | per 6 months |
| Osmosis Suite Access 3 Month | $149.00 | per 3 months |
| 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


### Histology Complete

[App page](https://appshunter.io/ios/app/histology-complete-secondlook/id1010753597)

This study aid offers a self-testing tool with high-quality micrographs to identify histological structures. It features over 550 pages covering all major human body tissues and organ systems, sourced from a renowned virtual slide collection.

**Highlights:** Self-testing knowledge assessment, High-quality micrograph images, Covers human tissues and organ systems, 27 study sets, Over 550 pages of content

**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 Histology Complete free?

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

### Which has better reviews, Osmosis or Histology Complete?

Osmosis is rated higher. Osmosis averages 4.8 out of 5 from 3.9K ratings, while Histology Complete averages 4.4 from 21 ratings.

### Do Osmosis or Histology Complete have ads?

Neither Osmosis nor Histology Complete shows ads.

### Which is updated more often, Osmosis or Histology Complete?

Osmosis ships an update monthly, and Histology Complete every 8 months. Most recently, Osmosis was updated on November 1, 2026 and Histology Complete on November 4, 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.*