About us
Our mission is to make your life with Whispp a little easier and more fun!
Why are we doing it?
Whispp founder Joris Castermans has stuttered all his life.
“As a child and especially as an adolescent in high school, it bothered me a lot. I was shy, felt socially isolated and found it difficult to make friends.”
For 3 years, the Whispp team has been working with speech therapists and other professionals to develop a solution for people with voice disorders.
Want to help?
The idea for Whispp that Joris had in 2018 finds its origin in the fact that when stuttering people whisper, they are relaxed and can speak (almost) fluently.
We then learned that Whispp is also valuable for people with voice disorders who need a boost for their voice.
Our partners
Whispp is a Dutch startup. We believe it is important to work in an ethically and scientifically based manner. That is why we work together with the following (academic) partners.







The team behind Whispp
Whispp is a Dutch startup. We believe it is important to work in an ethically and scientifically based manner. That is why we work together with the following (academic) partners.
Joris Castermans - CEO
Originally an industrial designer, I worked as an innovation consultant, business developer and alliance manager in IT and telecom. Based on my own experience of stuttering and interest in technology I founded Whispp.
Alex Stratu - iOS Developer
I am an iOS developer, and I strive to provide the best user experience for mobile users. With my previous expertise in advertising, I have a passion for the design process and the user interface.
Ravi Shankar Prasad - Speech Signal Researcher & Developer
I have a PhD in speech signal processing and have worked in the field of speech analysis and assessment of speech pathology.
Erik Minhas - Full Stack Software Developer
I studied Software Engineering in the United Kingdom and worked in the British fintech industry. At Whispp I work as a full-stack software engineer, developing both the backend systems and the Android app.
Wendeline Jans - Chief Marketing Officer
With 2 decades of experience in international business leadership roles in Consumer Health industries, I bring along my specific expertise in strategic business development, product management and innovation.
Akash Raj - AI Researcher & Developer
I studied Electrical and Computer science Engineering at BITS Pilani, India. After starting my career as a software engineer, I quickly realized my interest in machine learning.
Elise van Wijngaarden - AI Researcher & Developer
I am studying Computer Science at Leiden University with a specialization in Artificial Intelligence. At Whispp I do research into improving the conversion from whisper to speech.
Tatsu Matsushima - AI Researcher & Developer
I am Tatsu from Japan. I studied Voice Technology for my master’s degree, where I explored all aspects of deep learning for speech.
Thom Leenman - Software Engineer
I am a student software engineer. I keep myself busy with a big variety of tasks within Whispp, for example comparing the quality of Whispp to the current competitors, testing the mobile app and comparing different hardware combinations.
Malou Dusseldorp - Speech Therapist
I am Malou Dusseldorp, speech therapist with a specialization for working in the hospital. At Whispp I try to be the bridge between speech therapists, people with voice problems and technology.
Joris Castermans - CEO
Originally an industrial designer, I worked as an innovation consultant, business developer and alliance manager in IT and telecom. Based on my own experience of stuttering and interest in technology I founded Whispp.
Akash Raj - AI Researcher & Developer
I studied Electrical and Computer science Engineering at BITS Pilani, India. After starting my career as a software engineer, I quickly realized my interest in machine learning.
Ravi Shankar Prasad - Speech Signal Researcher & Developer
I have a PhD in speech signal processing and have worked in the field of speech analysis and assessment of speech pathology.
Erik Minhas - Full Stack Software Developer
I studied Software Engineering in the United Kingdom and worked in the British fintech industry. At Whispp I work as a full-stack software engineer, developing both the backend systems and the Android app.
Wendeline Jans - Chief Marketing Officer
With 2 decades of experience in international business leadership roles in Consumer Health industries, I bring along my specific expertise in strategic business development, product management and innovation.
Alex Stratu - iOS Developer
I am an iOS developer, and I strive to provide the best user experience for mobile users. With my previous expertise in advertising, I have a passion for the design process and the user interface.
Elise van Wijngaarden - AI Researcher & Developer
I am studying Computer Science at Leiden University with a specialization in Artificial Intelligence. At Whispp I do research into improving the conversion from whisper to speech.
Tatsu Matsushima - AI Researcher & Developer
I am Tatsu from Japan. I studied Voice Technology for my master’s degree, where I explored all aspects of deep learning for speech.
Thom Leenman - Software Engineer
I am a student software engineer. I keep myself busy with a big variety of tasks within Whispp, for example comparing the quality of Whispp to the current competitors, testing the mobile app and comparing different hardware combinations.
Malou Dusseldorp - Speech Therapist
I am Malou Dusseldorp, speech therapist with a specialization for working in the hospital. At Whispp I try to be the bridge between speech therapists, people with voice problems and technology.