Comparison

Cardio Z vs Echocardio Notes

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Cardio Z

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
Read full description

Instant Z-Scores For All The Paediatric Cardiology Parameters You Review Everyday. Cardio Z has been developed by the experienced Paediatric Cardiology team at Evelina Children's Hospital, London, UK in collaboration with the technology company UBQO. The application makes it easy to calculate Z-scores and centiles for the many cardiac and paediatric measurements that are made in normal clinical practice. Cardio Z distils a wealth of clinical research parameters into a single accessible format. Z–scores and centiles are a means of expressing how far a measurement is above (positive Z-score) or below (negative Z-score) the average for the size or age of a patient. They are particularly important in assessing and monitoring growing patients, from fetal life though to adulthood. Health professionals need to be able to access the normal ranges for cardiac parameters at every age and size, and cross-checking of measurements can be time-consuming and inconvenient. Cardio Z will prove invaluable for both clinicians working directly in Paediatric Cardiology, and those who work in other fields of Paediatrics. Cardio Z allows users to access Z-scores without the need for an internet connection, or the requirement to input the same data in multiple calculators. Users can define their own settings so that they can be sure that their use of z-scores is consistent over time, whilst still allowing flexibility for the experienced clinician. Comprehensive guidance is available ensuring that measurements are consistent with those of the original research, allowing valid comparisons. Cardio-Z creates a summary of all z-scores for each patient, which can then be saved, e-mailed or printed. Simple, reliable and time-saving. FULL LIST OF FEATURES: - Cardio Z allows calculation of z-scores of: - Height, weight, BMI and head circumference - Clinic blood pressure, with calculation of a user-defined 'target centile' blood pressure - Echocardiographic measurements of most cardiac structures, including valves, chambers, vessels and coronary arteries - Fetal echocardiographic measurements, using gestational age, femur length or biparietal diameter as size reference - M-mode echocardiography, including TAPSE - Pulsed wave velocities, including E/E' ratio and E/A ratio - Tissue Doppler velocities and time intervals. Including Isovolumetric Contraction Time (IVCT), Isovolumetric Relaxation Time (IVRT), Ejection Time and Myocardial Performance Index - Discriminant scores for neonatal aortic stenosis with borderline left ventricle - ECG parameters (2nd and 98th centiles) and corrected QT interval calculation EXTRA FEATURES: - Guidance tips for measurements, including diagrams and notes of the methods of the original researchers - Centiles, as well as z-scores, displayed for all parameters - No need to re-enter height and weight: baseline data only needs to be entered once - Generation of a .pdf summary which can be saved, e-mailed or printed - Saved patient Z-score summaries can be accessed and edited at a later date - Short-cut keys for frequently used parameters - Body surface area calculator can be defined to use the same algorithms as the original research - Cardio Z reduces the inconvenience of making Z-score calculations, and improves the correct application of this important clinical tool. The App is not a substitute for clinical judgement or institutional policies, thus it should complement and not replace normal procedures for making clinical decisions. We hope you enjoy using Cardio Z!

About

Echocardio Notes

This medical reference app offers quick access to current echocardiography values and protocols. Its clean interface provides essential information for healthcare professionals on smartphones and tablets.

Highlights
  • Up-to-date reference values
  • Echocardiography protocols
  • Quick and intuitive interface
  • Smartphone and tablet compatible
  • Free to use
Features
Read full description

Echocardio Notes is a free smartphone and tablet application, designed to provide up-to-date reference values and protocols in echocardiography through a quick, clean and intuitive interface.

Screenshots

Cardio Z4 screens
Echocardio Notes4 screens

Verdict

The call

The clearest difference is price: Echocardio Notes at Free against Cardio Z's $6.99. Echocardio Notes also leads on rating (5.0 vs 4.0) and update cadence (every 6 weeks vs every 21 months). Cardio Z's advantage is ratings volume (3 vs 1) and iOS requirement (10.0 vs 13.4). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Echocardio Notes is free to download; Cardio Z costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Echocardio Notes holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

UpkeepUpdate frequency

Cardio Z ships an update every 21 months, Echocardio Notes every 6 weeks. The most recent releases landed on October 15, 2026 and October 11, 2026 respectively.

Scorecard6 real differences · 4 level
Cardio Z versus Echocardio Notes: the parameters behind the verdict, then further details
ParameterCardio ZEchocardio Notes
Price$6.99Free — better
Rating4.0 (3 ratings)5.0 (1 ratings) — better
Positive reviews61.1% of reviews—
Number of ratings3 — better1
Update frequencyEvery 21 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better13.4
Further details — not scored
Size15 MB12 MB
Age rating4+17+
DeveloperUBQO LimitedWeb Artisans, Unipessoal Lda

Customer experience

Cardio Z

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews18 reviews
Positive61.1%
Neutral5.6%
Negative33.3%

Echocardio Notes

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Cardio Z

No in-app purchases

None

Echocardio Notes

No in-app purchases

Questions

Is Cardio Z free?
Cardio Z costs $6.99, with no in-app purchases.
Is Echocardio Notes free?
Echocardio Notes is free to download, with no in-app purchases.
Which has better reviews, Cardio Z or Echocardio Notes?
Echocardio Notes is rated higher. Cardio Z averages 4.0 out of 5 from 3 ratings, while Echocardio Notes averages 5.0 from 1 ratings.
Do Cardio Z or Echocardio Notes have ads?
Neither Cardio Z nor Echocardio Notes shows ads.
Which is updated more often, Cardio Z or Echocardio Notes?
Cardio Z ships an update every 21 months, and Echocardio Notes every 6 weeks. Most recently, Cardio Z was updated on October 15, 2026 and Echocardio Notes on October 11, 2026.

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