Maru said the app aims to give Māori better access to systems and treatments and "help them navigate through systems that are really difficult".
Charlton said brain injuries were hidden accidents but they occurred every 15 minutes in Aotearoa.
"It's even more prevalent than cancer."
They said Māori were more likely to be critically injured, less likely to seek medical attention, and Māori rehabilitation progress outcomes were poor.
"So we are driven to make a difference there, and try to deal with the inequities of it," Charlton said.
She said the money from ACC was going to be a big help in helping them provide evidence that the project they were proposing for whānau did work for whānau, "allowing us to test things out".
Maru said the investment from ACC would allow them to look outside the box and look for new ways to care for Māori.