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S/Z Ratio app for iPhone and iPad


4.7 ( 1757 ratings )
Education Medical
Developer: Meld Apps
1.99 USD
Current version: 1.1, last update: 7 years ago
First release : 29 Nov 2010
App size: 1.54 Mb

S/Z Ratio is an evaluation utility for speech-language pathologists who provide assessment and/or treatment to clients with voice disorders.

With a built-in stopwatch feature, S/Z Ratio allows for the timing of a clientʼs /s/ and /z/ maximum phonation times. Once maximum phonation times are taken, an s/z ratio is instantly calculated. Calculated ratios are displayed in a color-coded fashion to provide visual feedback for quick interpretation of testing results. A reference information screen is also included to assist clinicians and clients in interpreting the obtained s/z ratio results.

Consider using this application throughout the evaluation and treatment process: (1) during initial evaluations, (2) as a screening tool to identify the need for further assessment, (3) during treatment sessions for visual, instant feedback, and (4) as a re-evaluation measure of progress based on therapeutic interventions.

Whether you specialize in voice therapy or provide treatment to the occasional client with voice disturbances, this application is a must-have. S/Z Ratio provides a wealth of features including:

- Built-in stopwatch
- Instant calculation of ratio
- Color-coded display of ratios
- Reference information screen for assistance in interpreting results
- Single touch Start, Stop and Reset stopwatch buttons
- Large, easy to read display
- Displays /s/ and /z/ maximum phonation time simultaneously for easy review and discussion with clients

Replace your stopwatch and calculator with this app today, and gain some much needed time and pocket space as a result!

Latest reviews of S/Z Ratio app for iPhone and iPad

Convenient, but not much better than a stop watch.
Generally with S/Z, you want to take the maximum time. It would be much better if you could measure x3 and take /choose the longest for the comparison. Instead, it only stores 1 S and 1 Z at a time. Does the norms for you, but isnt much better than a stopwatch as is. If it used 3/would save the longest, then itd be worth the price.
Works great!
Very clean interface and very easy to use. This app actually saves me a lot of time.
Easy to use
Simple concept, and a great time saver!
Will use immediately!
App is fast and intuitive to use, gives instant feedback (+ motivation) via real-time stopwatch. I will switch from cumbersome hand-timing now. And I can quit just writing "moderately breathy voice" in writeups & have a real baseline. A great addition to my daily-use "in the field" SLP eval toolkit.
Good app!
Pretty simple and user friendly.
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