Healthtech and IoT in your head!


Growth Stage - Series A

The Brazilian healthtech operating in Brazil and USA brain4care is responsible for the development and licensing of a platform for non-invasive monitoring of compliance and intracranial pressure.

This method significantly reduces patients' neurological risks and care costs

Hybrid App Proof of concept

The big challenge, at first, was to evaluate the impacts of migrating the application of Kotlin technology to React-Native, since it has the potential to work on both Android and iOS phones, reducing maintenance costs.

In this way, we understand the main points and seek answers. Would React-Native perform well building real-time graphs with a huge amount of points per minute? What are the advantages and disadvantages?


Using React-Native, an application was developed that worked on Android and iOS devices. It connects to the pressure measurement sensor via bluetooth, consumes buffers and displays the information in an updated graph in real time, recording it along with the client's encrypted data to ensure medical confidentiality.

In the end, the React-Native strategy established itself as the best solution!



When designing the final product, it was important to understand the user and application use cases. As it would be used mainly by medical professionals in hospitals, it was necessary to think in a solution that reduce the number of clicks and interactions with the application.

In this way, usability would suit the needs of those who use the interface, ensuring alignment with the context of urgency in carrying out work tasks.

In addition, a standard Design System was built to make the user experience unique.

Tech Highlight

After the proof of concept, the challenge was to develop the entire application in ReactNative, as well as perform the data migration to the new application. Improvements were implemented in the management and transmission of data, to achieve the best communication performance, in addition to the application of encryption in all patient data.


An optimization technique called memoization was used. In this way, it was possible to guarantee greater speed and consistency in the consumption of buffers via Bluetooth, as the data is cached as soon as new information arrives from the sensor.

Data Migration

When transitioning the application from Kotlin to React-Native, it was necessary to perform a synchronized migration of the existing data. In this way, we guarantee that existing information will not be lost. Also, some improvements have been made to improve functionality, such as changes to storage to optimize application performance.


When transitioning sensitive patient data via Bluetooth, it was important to encrypt the information sent. For this, the RSA algorithm was used, ensuring the security of the information transferred between the Software and Hardware.


In addition to the information provided, the sensor also sends information regarding energy consumption. This mode, the user through the sensor application interface


At the end of the project, the Liven team delivered a functional app for Android and iOS, and responsive for tablets and cell phones. The main features were the monitoring chart consuming the sensor buffers, and also the final report, with the summary results of the measurements for each patient.

FDA approval

As this is confidential information, another challenge was to ensure the app's approval at the FDA, Anvisa and in stores (AppStore and PlayStore). The Liven team assists in the development and construction of the documentation that was essential, along with data encryption, for successful approval.

Project feedback

Very good chemistry between our teams
Claudio Menegusso

Chief Digital Officer @brain4care

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