# Cardio Z vs Littmann Learning

The clearest difference is price: Littmann Learning at Free against Cardio Z's $6.99. Littmann Learning also leads on rating (4.9 vs 4.0) and update cadence (every 6 weeks vs every 21 months). Cardio Z's advantage is in-app purchases (none vs 11) and review sentiment (61% vs 48%). On ads and device support there is nothing between them.

Littmann Learning is free to download; Cardio Z costs $6.99 up front. Littmann Learning sells 11 in-app purchases, starting at $3.99 per month. Cardio Z asks for nothing beyond the download.

Littmann Learning holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Littmann Learning has 854 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 61% of Cardio Z's written reviews are positive against 48% of Littmann Learning's, so the app with the better star average is not the one people write more warmly about.

Cardio Z ships an update every 21 months, Littmann Learning every 6 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Cardio Z | Littmann Learning |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/cardio-z/id494844989/reviews) | **[4.9 (854 ratings)](https://appshunter.io/ios/app/littmann-learning/id1324485260/reviews)** |
| Number of ratings | 3 | **854** |
| Positive reviews | **61.1% of reviews** | 47.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 6 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 15 MB | 19 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [UBQO Limited](https://appshunter.io/developer/415663348) | [CSD Labs](https://appshunter.io/developer/1318756877) |

## What reviewers say

### Cardio Z

[App page](https://appshunter.io/ios/app/cardio-z/id494844989)

This medical app provides instant Z-scores and centiles for pediatric cardiology measurements. It simplifies the calculation of vital cardiac and pediatric parameters, offering guidance and saving patient data for easy sharing. Designed for healthcare professionals, it streamlines clinical assessments and monitoring.

**Highlights:** Instant Z-score and centile calculations, Supports numerous cardiac and pediatric measurements, Offline functionality, Patient data saving and sharing, Customizable user settings, Guidance tips for measurements

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

**In-app purchases:** none


### 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 (11)**

| 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 |
| Full Version | $44.99 | 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 |


## Frequently asked questions

### Is Cardio Z free?

Cardio Z costs $6.99, with no in-app purchases.

### Is Littmann Learning free?

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

### Which has better reviews, Cardio Z or Littmann Learning?

Littmann Learning is rated higher. Cardio Z averages 4.0 out of 5 from 3 ratings, while Littmann Learning averages 4.9 from 854 ratings.

### Do Cardio Z or Littmann Learning have ads?

Neither Cardio Z nor Littmann Learning shows ads.

### Which is updated more often, Cardio Z or Littmann Learning?

Cardio Z ships an update every 21 months, and Littmann Learning every 6 weeks. Most recently, Cardio Z was updated on October 24, 2026 and Littmann Learning on October 25, 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.*