The free-to-download app offers an option to track coughs through the day, week, month or year.
Users can monitor a loved one's cough and can grant permission to share data.
Users cough into the phone microphone and the app analyses the cough.
The plan is that the user then alerts their doctor and has a record of coughing.
"The idea of acoustic epidemiology is nothing new," Mr Brew said.
"They ask you to describe a cough and assess is it dry or forced. I believe acoustic coughing is going to become a very important tech.
"People never used to monitor how many steps they took each day, but now that's something a lot of people do."