# EchoCalc vs Cardio Z

The clearest difference is price: EchoCalc at Free against Cardio Z's $6.99. EchoCalc also leads on update cadence (monthly vs every 21 months) and ratings volume (23 vs 3). Cardio Z's advantage is rating (4.0 vs 2.3) and in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

EchoCalc is free to download; Cardio Z costs $6.99 up front. EchoCalc sells 3 one-off in-app purchases. Cardio Z asks for nothing beyond the download.

Cardio Z holds the better App Store score, 4.0 against 2.3. That said, the two scores are not equally well evidenced: EchoCalc has 23 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 49% of EchoCalc's written reviews are positive against 61% of Cardio Z's.

EchoCalc ships an update monthly, Cardio Z every 21 months. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | EchoCalc | Cardio Z |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | [2.3 (23 ratings)](https://appshunter.io/ios/app/echocalc/id468166426/reviews) | **[4.0 (3 ratings)](https://appshunter.io/ios/app/cardio-z/id494844989/reviews)** |
| Number of ratings | **23** | 3 |
| Positive reviews | 48.8% of reviews | **61.1% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 21 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 7 MB | 15 MB |
| Requires iOS | 11.0 | **10.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [British Society of Echocardiography](https://appshunter.io/developer/468166429) | [UBQO Limited](https://appshunter.io/developer/415663348) |

## What reviewers say

### EchoCalc

[App page](https://appshunter.io/ios/app/echocalc/id468166426)

Access essential echocardiography reference data for clinical practice. Includes measurements, diastolic function, prosthetic valve data, and topic guides. Supports multiple reference standards and recent guidelines.

**Highlights:** Echocardiography reference data, LV/RV size & function, Diastolic function data, Prosthetic valve reference, Topic guides with explanations, Multiple reference standards (BSE, ASE, EACVI), Access to recent guidelines

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donate £2 to BSE | $1.99 | one-time |
| Donate £5 to BSE | $4.99 | one-time |
| Donate £10 to BSE | $9.99 | one-time |


### 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


## Frequently asked questions

### Is EchoCalc free?

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

### Is Cardio Z free?

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

### Which has better reviews, EchoCalc or Cardio Z?

Cardio Z is rated higher. EchoCalc averages 2.3 out of 5 from 23 ratings, while Cardio Z averages 4.0 from 3 ratings.

### Do EchoCalc or Cardio Z have ads?

Neither EchoCalc nor Cardio Z shows ads.

### Which is updated more often, EchoCalc or Cardio Z?

EchoCalc ships an update monthly, and Cardio Z every 21 months. Most recently, EchoCalc was updated on October 14, 2026 and Cardio Z on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*