# Littmann Learning vs Visual Blood Gas Calc

The clearest difference is in-app purchases: Visual Blood Gas Calc at none against Littmann Learning's 10. Visual Blood Gas Calc also leads on iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Littmann Learning sells 10 in-app purchases, starting at $3.99 per month. Visual Blood Gas Calc asks for nothing beyond the download.

## The numbers

| Metric | Littmann Learning | Visual Blood Gas Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (856 ratings)](https://appshunter.io/ios/app/littmann-learning/id1324485260/reviews)** | — |
| Number of ratings | **856** | — |
| Positive reviews | 47.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 19 MB | 280 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [CSD Labs](https://appshunter.io/developer/1318756877) | [Inosante Medikal Saglik Urunleri Sanayi Ve Ticaret Anonim Sirketi](https://appshunter.io/developer/1743943467) |

## What reviewers say

### Littmann Learning

[App page](https://appshunter.io/ios/app/littmann-learning/id1324485260)

This app provides access to real patient heart and lung sounds for auscultation education. It offers visual and audio displays, self-paced learning modules, and background reading material to help users recognize various heart and lung sounds.

**Highlights:** Real patient heart and lung sounds, Visual and audio displays, Self-paced learning modules, Graduated learning difficulty, Background reading material

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Plan - 1 month | $3.99 | per month |
| Premium Plan - 1 month | $6.99 | per month |
| Basic Monthly | $8.99 | per month |
| Standard Plan - 1 year | $19.99 | per year |
| Semester Pass | $29.99 | per 6 months |
| Premium Plan - 1 year | $39.99 | per year |
| Annual Pass | $49.99 | per year |
| CE -  Fundamentals | $124.99 | one-time |
| CE -Advanced | $174.99 | one-time |
| CE - Intermediate | $249.99 | one-time |


### Visual Blood Gas Calc

[App page](https://appshunter.io/ios/app/visual-blood-gas-calc/id6503200963)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Littmann Learning free?

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

### Is Visual Blood Gas Calc free?

Visual Blood Gas Calc is free to download, with no in-app purchases.

### Do Littmann Learning or Visual Blood Gas Calc have ads?

Neither Littmann Learning nor Visual Blood Gas Calc shows ads.

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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.*