CENTRIC Rep + TUT Timer

Transform your strength training with CENTRIC, the precision rep and interval timer designed for serious lifters who demand perfect form and maximum muscle activation. Whether you're powerlifting, bodybuilding, or pursuing strength gains, CENTRIC ensures every rep counts with scientifically-backed time under tension protocols.

Perfect Rep Timing, Every Time


CENTRIC synchronizes every phase of your lift to optimal tempos. From the eccentric lowering phase to the concentric lifting phase, our precision timing keeps your muscles under tension for maximum growth stimulus. No more guessing – just perfectly timed reps that build serious strength.

Smart Tempo Control


Choose from proven preset tempos (Hypertrophy, Strength, Explosive) used by elite trainers, or create custom tempos tailored to your specific training goals. Select concentric-first timing for squats, deadlifts, and presses, or eccentric-first timing for pull-ups, rows, and curls. CENTRIC adapts to your methodology and exercise selection.

Haptic & Audio Guidance


Feel and hear your way to perfect form. Apple Watch haptic feedback keeps you connected to your timing without looking at screens, while crystal-clear audio cues guide each rep phase. Train with focus and intensity while maintaining precise control.

Rest Timer with Personality


Between sets, CENTRIC keeps things light with humorous rest alerts including the fan-favorite "Don't steal my station!" message. Customizable rest periods ensure optimal recovery while keeping your workout energy high.

Seamlessly Synced Rep Phases


Every stage of your rep is perfectly synchronized to your chosen tempo:
- Eccentric (lowering): Build strength through controlled resistance
- Hold: Maximize muscle tension at critical points
- Concentric (lifting): Explosive power with perfect timing
- Rest: Get ready for your next rep

Key Features


- Preset & custom tempo options
- Apple Watch haptic feedback
- Audio cues for each rep phase
- Customizable rest timer alerts
- Perfectly synced rep timing
- Clean, distraction-free interface
- Works with any exercise
- FREE to start your strength journey

Perfect For

- Strength training & powerlifting
- Bodybuilding & hypertrophy focus
- Time under tension protocols
- Form improvement & technique work
- Progressive overload training
- Serious lifters seeking precision

Why Time Under Tension Matters


Research