The HeadCheck™ concussion app is an evidence‑based tool designed for children and adults and is available for research purposes only. Developed by leading concussion experts at the AFL, Murdoch Children’s Research Institute (MCRI) and The Royal Children’s Hospital, HeadCheck™ is used as part of research to help adult players, parents, coaches and first aiders recognise the signs of concussion, determine whether medical attention may be required, and support safe return to school, study, work, play and organised sport.