Tension vs TimerBro

Tension is a strength-training app built around one simple idea: how you move each rep matters as much as how much you lift. Control your tempo, own the eccentric, and make every set count. Build your routine on iPhone, then run the whole workout from your Apple Watch — timers, rest countdowns, and rep counting right on your wrist. TIME UNDER TENSION Set a concentric and eccentric tempo for each exercise and let Tension pace every rep. It counts your reps out loud so you can keep your eyes off the screen and your focus on the lift — through your watch speaker or Bluetooth headphones. BUILT FOR APPLE WATCH Start a workout, work through your sets, log what you completed, and start your rest timer without ever touching your phone. Your watch respects Silent Mode, so counting plays through headphones when you want it and stays quiet when you don't. TRACK YOUR PROGRESS Set rep and weight goals, log completed sets, and watch your strength build over time. Completed workouts save to Apple Health automatically. AUTOMATIC PROGRESSIVE OVERLOAD Give each exercise a rep goal and a weight increment, and Tension handles progression for you. The moment you hit your rep max, it automatically raises your target weight by your chosen increment for the next workout — so you keep getting stronger without doing the math. PRIVATE BY DESIGN Tension has no accounts and no servers. Your workouts live on your device and sync across your iPhone and Apple Watch through your own private iCloud. No analytics, no ads, no tracking — ever. FEATURES - Time-under-tension tempo timing with spoken rep counting - Automatic progressive overload — target weight steps up when you hit your rep goal - Full Apple Watch app: timers, rest countdowns, set logging - Custom workouts and exercises with rep and weight goals - Apple Health sync for completed workouts - Private iCloud sync across your devices - Optional location-aware workout suggestions Train with intention. Build strength with Tension.

FEEL THE TEMPO. DON'T COUNT IT. TimerBro is the only workout app that guides every rep phase with pulsing audio - so you can stop counting in your head and start feeling the rhythm. THE PROBLEM WITH COUNTING You're mid-set. You know the tempo is 3-1-2-1. Then your gym partner walks past, the music drops, and suddenly you're on count two... or was it three? Your focus breaks. The set suffers. HOW TIMERBRO SOLVES IT A pulsing metronome guides each phase - eccentric, pause, concentric, pause - with distinct audio tones that decelerate as the phase nears its end. You feel when to transition. No counting required. CORE FEATURES REP TIMING - Set tempo notation per exercise (e.g. 3-1-2-1). Pulsing audio guides every phase. TUT TRACKING - Auto-calculates time under tension per exercise and per workout. See the work your muscles actually do. APPLE WATCH - Plan on iPhone. Execute on Watch. Keep your phone in your bag. MUSIC FRIENDLY - Your playlist keeps playing. Tempo audio mixes with whatever you're listening to. HEALTHKIT - Tracks heart rate and logs workouts to Apple Health. Heart rate and calorie tracking requires Apple Watch. WHO IT'S FOR From your first lift to your thousandth - if you believe how you lift matters as much as how much you lift, TimerBro is your training partner. Whether you're chasing hypertrophy, building strength, or returning from injury, controlled tempo and tracked TUT will level up your training. YOUR DATA IS YOURS No account required. No login. Just open the app and train. Your workout data stays on your device and is never shared. PRICING $4.99/month or $39.99/year - save 33% 14-day free trial - no credit card required to start Build and save workouts during your trial. No data loss if you don't subscribe.