Cardio Z Downloads & RevenueCardio Z · App Store
Cardio Z is #19 in Medical Paid in China and charting in 10 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
Full timeline · 25 events in the last 12 months
- 📈Cardio Z entered the top 10Top Paid · Medical · GB
- 📈Cardio Z entered the top 100Top Grossing · Medical · GB
- 📈Cardio Z entered the top 100Top Paid · Medical · CA
- 📈Cardio Z charting in a new countryCanada
- 📈Cardio Z charting in a new countryArgentina
- 📈Cardio Z charting in a new countryTurkey
- 📈Cardio Z entered the top 10Top Paid · Medical · FR
- 📈Cardio Z entered the top 10Top Paid · Medical · AE
- 📈Cardio Z entered the top 100Top Grossing · Medical · AE
- 📈Cardio Z charting in a new countryPhilippines
- 📈Cardio Z entered the top 10Top Paid · Medical · CN
- 📈Cardio Z entered the top 100Top Grossing · Medical · CN
- 📈Cardio Z entered the top 10 in 2 chartsTop Paid · Medical · BR · Top Paid · Medical · IT
- 📈Cardio Z entered the top 100 in 2 chartsTop Grossing · Medical · BR · Top Grossing · Medical · IT
- 🌟Cardio Z: featuring lifted it to #58 (from outside the chart)Top apps de pago · MX
- 📈Cardio Z entered the top 100Top Paid · Medical · AU
- 📈Cardio Z charting in a new countryAustralia
- 📈Cardio Z entered the top 100Top Paid · Medical · GB
- 🌟Cardio Z featured by Appleapps · MX
- 📈Cardio Z entered the top 100Top Paid · All Apps · MX
- 📈Cardio Z charting in a new countryMexico
- 📈Cardio Z entered the top 100 in 5 chartsTop Paid · Medical · BR · Top Paid · Medical · CN · Top Paid · Medical · FR · Top Paid · Medical · IN · +1 more
- 📈Cardio Z charting in a new country in 7 chartsBrazil · China · Germany · France · +3 more
- 🆕Cardio Z first spotted by AppInsider#53 in Top Paid · Medical · Russia
- 🆕Cardio Z released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Cardio Z at a glance
AI summary written from our chart and store data, 2026-11-06. It can be wrong: check the numbers above.
Cardio Z is a paid medical utility for paediatric cardiologists and clinicians that calculates Z-scores and centiles for cardiac and growth parameters offline. The app holds strong positions in the Italian (#4) and French (#20) paid Medical charts, indicating niche but significant traction in European markets despite low global visibility.
Similar apps: Z-Score Calculator, Pediatric Growth Charts, EchoCalc
Cardio Z on the App Store
App details
App privacy Measured
Cardio Z’s App Store privacy label declares 0 data categories used to track you across other companies’ apps and websites, 0 linked to your identity and 0 collected anonymously.
As declared by the developer on the App Store — Apple requires every app to publish this label. We track changes over time.
Cardio Z downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Active users
All platforms, worldwide. Free with an account.
How this is calculated
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| MedicalPaid | #19 | |
| MedicalPaid | #31 | |
| MedicalPaid | #24 | |
| MedicalPaid | #132 | |
| MedicalPaid | #57 | |
| MedicalPaid | #75 | |
| MedicalPaid | #54 | |
| MedicalPaid | #77 | |
| MedicalPaid | #140 | |
| MedicalPaid | #167 |
Apps near Cardio Z on the chart
Medical Paid, around #19.
Ratings
App Store, worldwide.
Review momentum
ⓘ How we measure thisReview momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
What users say about Cardio Z
From recent reviews.
About Cardio Z
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 summar
Latest updates
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