# Avkin vs SAM4 Online

The clearest difference is in-app purchases: Avkin at none against SAM4 Online's 1. Avkin also leads on update cadence (monthly vs every 6 months) and ratings volume (13 vs 1). SAM4 Online's advantage is rating (5.0 vs 4.7) and iOS requirement (12.2 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. SAM4 Online sells 1 one-off in-app purchase. Avkin asks for nothing beyond the download.

SAM4 Online holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Avkin has 13 ratings behind it against 1, so its average is the more settled of the two.

Avkin ships an update monthly, SAM4 Online every 6 months. The most recent releases landed on August 8, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Avkin | SAM4 Online |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (13 ratings)](https://appshunter.io/ios/app/avkin/id1275265620/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sam4-online/id1615890331/reviews)** |
| Number of ratings | **13** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 45 MB | 90 MB |
| Requires iOS | 15.1 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Avkin, Inc](https://appshunter.io/developer/1868403058) | [3B Scientific](https://appshunter.io/developer/1407867777) |

## What reviewers say

### Avkin

[App page](https://appshunter.io/ios/app/avkin/id1275265620)

This application serves as a control interface for advanced wearable medical simulators designed for nursing students. It enables users to manage various simulated patient conditions and physiological sounds, enhancing hands-on learning experiences.

**Highlights:** Control Bluetooth-enabled Avkin products, Simulate lung sounds, Simulate heart sounds, Manage Avtrach, Avline, Avtone, Avthor, Avwound, Avband, Avbirth, Enhance nursing education

**Features:** Vision Pro support

**In-app purchases:** none


### SAM4 Online

[App page](https://appshunter.io/ios/app/sam4-online/id1615890331)

This interactive platform offers extensive simulated sound libraries and lesson guides for over 60 medical conditions. It provides students with easy access to class materials, quizzes, tests, and a virtual manikin for auscultation training.

**Highlights:** Simulated sounds library, Lesson guides for 60+ conditions, Virtual manikin simulator, Access to class materials, Quizzes and tests, Control physical manikin

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Personal User - Full Content | $19.99 | one-time |


## Frequently asked questions

### Is Avkin free?

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

### Is SAM4 Online free?

SAM4 Online is free to download, with in-app purchases available.

### Which has better reviews, Avkin or SAM4 Online?

SAM4 Online is rated higher. Avkin averages 4.7 out of 5 from 13 ratings, while SAM4 Online averages 5.0 from 1 ratings.

### Do Avkin or SAM4 Online have ads?

Neither Avkin nor SAM4 Online shows ads.

### Which is updated more often, Avkin or SAM4 Online?

Avkin ships an update monthly, and SAM4 Online every 6 months. Most recently, Avkin was updated on August 8, 2026 and SAM4 Online on September 18, 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.*