Train smarter.
Lift stronger.
Track your workouts without slowing down. Check your lifting form with your phone camera, see how fast the bar moves, and let Coach Ark adjust your weights based on how rested you are.
Ark Lens. Check your form and bar speed with your camera.
Prop up your phone and do your set. Ark Lens watches how straight the bar moves, checks your squat depth, and measures how fast you lift—all right on your phone, so your gym videos never get uploaded anywhere.
Shows if the bar drifts forward or backward on squats, bench, and deadlifts so you don't waste energy.
Measures how fast your reps move so you know how many reps you actually have left in the tank.
A coach that knows when to push—and when to back off.
Coach Ark looks at your recent workouts alongside how well you slept and how you ate in Ark Nutrition. It automatically adjusts your target weights and reps for the day so you make steady progress without burning out.
Adjusts to Your Energy
Automatically lightens the load on days you're beat up or short on sleep, and nudges weights up when you're fresh.
Voice Cues in Your Headphones
Gives you rest timer countdowns and simple coaching tips right in your earbuds so you don't have to stare at your screen.
“You slept great and hit your food goals yesterday. Let's add 5 lbs to your main squats today.”
See which muscles are working—and which ones need rest.
Ark keeps track of every muscle group you hit during the week. Easily spot which muscles are recovering, which ones are ready to train again, and which ones you've been skipping.
Safe Max-Weight Estimates
Estimates your 1-rep max from your normal sets so you can see your strength climb without risking injury on a heavy single.
Weekly Set Tracker
Shows if you're doing enough sets each week to build muscle without overdoing it and getting sore for days.
Everything you need for a great workout.
Simple, fast tools designed so you spend your time lifting, not tapping on your phone.
Fast Set Logging
Log weight, reps, and how hard a set felt in a couple of taps—even in a basement gym with zero cell service.
Smart Rest Timer
Automatically gives you extra rest after a brutal heavy set, and keeps things moving on lighter warmup sets.
Apple Watch & WearOS
Leave your phone in your gym bag. Log sets, check your rest timer, and see your heart rate right from your wrist.
Exercise Guides & Machine Notes
Clear exercise demos plus a place to save your personal seat height and pin settings for every gym machine.
Progress Photos & Measurements
Keep your progress pictures, body weight, and tape measurements organized in one private place over time.
Your Data Belongs to You
Your workout history is saved safely on your phone so you never lose a workout, and you can export it to a spreadsheet anytime.
Ready for a workout app that actually helps you lift?
Join our early-access group of lifters testing Ark Fit before public launch.