Ratio S/Z Downloads & RevenueRatio S/Z · App Store
Ratio S/Z is #165 in Medical Paid in United States and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperMarina Sauca
CategoryMedical
Price2.99 USD
Released
Rating★ 0.0 (0)
Version3.01
Age rating12+
First seen by us
3 Oct 2026
3 Oct 2026📈Entered the top 100📈Charting in a new country🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 4 events in the last 12 months
- 📈Ratio S/Z entered the top 100Top Paid · Medical · US
- 📈Ratio S/Z charting in a new countryUnited States
- 🆕Ratio S/Z first spotted by AppInsider#9 in Top Paid · All Apps · Spain
- 🆕Ratio S/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.
Rating
0.0 ★
0 ratings
Measured
Best rank now
#165
Medical PaidMeasured
Ratio S/Z on the App Store
App details
App ID
1207544244
Publisher
Marina Sauca
On the store since
Apr 2017
9 years on the store
Minimum OS
iOS 11.0+
iPhone 5s and later
Devices
iPhone · iPad · Watch
Universal purchase
Content rating
12+
1 content note below
Languages
4
CA EN IT ES
Size
26 MB
Also listed in
Health & Fitness
Content notesInfrequent/Mild Medical/Treatment Information
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | MedicalPaid | #165 |
Apps near Ratio S/Z on the chart
Medical Paid, around #165.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About Ratio S/Z
Ratio S/Z is an app designed by Andreu Sauca, an experienced speech therapist and phoniatrician. It has been conceived as a tool for the evaluation and the monitoring of voice rehabilitation.
Purpose:
The app registers the maximum expiration and phonation time and the calculation of the phonation quotient (or ratio S/Z) by using the highest of the three values in each.
The ratio S/Z test is a crucial part in every protocol of voice exploration. There might be different professional purposes for taking the test. In addition to the exploration purpose, the ratio S/Z can be used as a re-evaluation in case of being monitoring or before being discharged. In some cases, it can also be prescribed as a training for different objectives (this app can be used both by the speech therapist and by the patient) or as a screening tool to detect voice problems among some collectives such as teachers.
Procedure:
With the aid of the chronometers integrated in the ratio S/Z, the professional registers three samples of the highest time taken in the production of the [s] and other three samples on the highest time production of the [z]. Each chronometer shows the obtained values and highlights the highest one in blue. Automatically, the app uses these values to calculate the S/Z quotient, which appears in green or in red to indicate whether it is pathological or not. The interpretation of results varies according to some parameters (age and gender) is accessible through a specific button.
As the age and sex of the patient can vary the interpretation of the results, a button allows the selection of which kind of patient is undergoing the test. This will give us not only a more accurate result, but it will also evaluate the phonation time length, this is a novelty of this app.
Characteristics:
-Careful design to enable an easy access and a right understanding of the results.
-Two chronometers with three partial storing boxes each individually resettable.
-Selection of the type of patient according to age and gender.
-Resounding examples of the requested sound.
-Color code to identify the result fields and buttons.
-Start, stop and reset buttons for each chronometer.
-Informative window about the test.
-Help window to ease the interpretation of results, adapted to it.
-Export your results to pdf.
-Languages: Spanish, Catalan, Italian and English. More soon.
Purpose:
The app registers the maximum expiration and phonation time and the calculation of the phonation quotient (or ratio S/Z) by using the highest of the three values in each.
The ratio S/Z test is a crucial part in every protocol of voice exploration. There might be different professional purposes for taking the test. In addition to the exploration purpose, the ratio S/Z can be used as a re-evaluation in case of being monitoring or before being discharged. In some cases, it can also be prescribed as a training for different objectives (this app can be used both by the speech therapist and by the patient) or as a screening tool to detect voice problems among some collectives such as teachers.
Procedure:
With the aid of the chronometers integrated in the ratio S/Z, the professional registers three samples of the highest time taken in the production of the [s] and other three samples on the highest time production of the [z]. Each chronometer shows the obtained values and highlights the highest one in blue. Automatically, the app uses these values to calculate the S/Z quotient, which appears in green or in red to indicate whether it is pathological or not. The interpretation of results varies according to some parameters (age and gender) is accessible through a specific button.
As the age and sex of the patient can vary the interpretation of the results, a button allows the selection of which kind of patient is undergoing the test. This will give us not only a more accurate result, but it will also evaluate the phonation time length, this is a novelty of this app.
Characteristics:
-Careful design to enable an easy access and a right understanding of the results.
-Two chronometers with three partial storing boxes each individually resettable.
-Selection of the type of patient according to age and gender.
-Resounding examples of the requested sound.
-Color code to identify the result fields and buttons.
-Start, stop and reset buttons for each chronometer.
-Informative window about the test.
-Help window to ease the interpretation of results, adapted to it.
-Export your results to pdf.
-Languages: Spanish, Catalan, Italian and English. More soon.
Latest updates
3.01
We have a new and fresh look!
Also, you can now export the results to pdf and share it from the app.
The app has been rewritten from scratch, it's now better, faster and stronger!
Italian is now available as a language.
A small bug in the pdf generation has been fixed.