During a stroke, a patient loses around 2 million neurons per minute. The first 60 minutes at hospital can mean the difference between life and death.

Boehringer Ingelheim tasked Karmarama to develop a digital tool that would enable hospitals to reduce their ‘door-to-needle’ time, increasing survival rates and reducing the long-term impact of the stroke for the patient.

How we helped do the right thing

We created The Stroke Stopwatch App, a mobile app based around a timer.

The core function of the app was a built-in timer which, when activated, indicates the amount of time it’s taken to get the patient to each stage of treatment, allowing doctors to assess patients more efficiently.

As well as using the app for analysis of live cases, hospital teams can use it to keep track of historic cases and track case-by-case learnings.

What happened next

As the app is primarily for use in emergency situations, we needed to ensure the tool functioned intuitively and the product design was easy to use and wouldn’t interfere with any patient care.

Using our phased approach, our UX experts worked alongside hospital teams to complete phased testing to optimise the efficiency of the app. We wanted to bring an innovative idea to the medical market and offer hospitals a tool to support them in their daily routines. Allowing them to perform better and have a tangible impact on how stroke patients are treated.


The app was launched in 600 hospitals across 13 different country markets and languages, with incredible results. The Stroke Stopwatch app has reduced the door-to-needle time by a 1/3 and lowered the fastest average treatment time to under 20 minutes.