The goal of the Axon app is to digitize the Trail Making Test (TMT), a cognitive function screening tool developed in 1944, with a large body of research supporting its use. Cognitive function refers to the efficiency and accuracy of brain processing and has numerous long-term and short-term moderators. Long-term moderators, like education and aging, shape health, learning, and development over an individual’s life. Short-term moderators, like emotion, fatigue, and stress, can also can affect cognitive function, potentially in a manner which degrades job related performance and cognitive readiness. Through long-term, iterative use of the Axon app, individuals can detect long-term and short-term changes in their cognitive function, enabling them to take action and/or permitting insight into the cognitive efficaciousness of education or health interventions. With the Axon app, end-users can self-administer infinite versions of the test and view user-friendly reports of their test results. Administrative industrial or clinical users can anonymously register end-users, and access detailed statistics linked to demographics and other information. By prioritizing usability, self-administration, and scientific validation, Axon empowers clinicians, companies, and individual users with the digitized tool they need to exercise agency when it comes to education and health.