Triceps, Biceps, Forearms

Build bigger, stronger arms with Triceps, Biceps, Forearms — the intelligent arm training program designed to deliver visible results in weeks, not months.

If you're serious about developing defined, toned arms, this app combines progressive overload with strategic muscle isolation to shock your biceps, triceps, and forearms into growth. Unlike generic workout routines, each level increases in difficulty to prevent plateaus and keep your muscles constantly challenged. Heavy compound lifts are paired with targeted isolation exercises using band resistance, ensuring you build both size and strength while reducing arm body fat for maximum definition.

Your training is personalized each week with customized workouts tailored to your progress. Every session includes HD instructional videos so you can preview techniques and master form before you lift — critical for preventing injury and maximizing results. Whether you're strengthening weak points in compound pulling movements (your biceps) or building lockout strength for pressing variations (your triceps), the app's intelligent programming addresses the specific demands of arm development.

Stay motivated with Fitivity BEATS, an engaging workout experience that pairs DJ-curated mixes with coaching from motivating trainers who push you through every rep. Your personal digital trainer provides real-time audio guidance throughout each session, keeping you accountable and focused on proper execution.

Flexibility is built in: stream workouts online when you have a connection, or download them to train offline — your progress syncs seamlessly either way. The combination of progressive resistance, muscle-group isolation, and consistent programming creates the environment your arms need to grow. Users report noticeable size and strength gains within the first month of consistent training.

Whether your goal is sleeve-splitting biceps, horseshoe triceps, or complete forearm development, Triceps, Biceps, Forearms delivers the structure, guidance, and motivation to get you there.