DoSo, derived from the Latin phrase "Non Ducor Duco," emphasizes the concept of taking control of one's thoughts and emotions rather than being led by them. Developed by Stuart Singer, this free lifestyle app falls under the health & fitness category. It aims to empower users to lead their thoughts, enhance mental strength, and improve performance under pressure.

The app offers sessions designed by WellPerformance, focusing on developing essential performance psychology skills. Users can learn to understand their mind's reactions to stress, gain awareness of their responses, and cultivate consistent peak performance. By practicing mindset exercises repeatedly, users can strengthen their "mental muscle" and enhance their resilience.