Metron is a free Android application developed by Metron Innovation Group, designed for fitness professionals to train their clients online. The app features a comprehensive set of tools that includes exercise video tutorials, custom workouts, and app messaging. Coaches can create branded websites and funnels, build automated email or SMS follow-up sequences, and manage their clients through the client messenger and CRM.

The app's adaptive variable personalization feature enhances clients' workouts by adjusting their performance data. The Metron All-In-One Client Features include workout tracking, access to training programs, workout logging, scheduling, and real-time messaging with coaches. An online account is required, and this app is a companion app for businesses that use Metron. Clients can ask their coaches for their account details to log in to the app.