Join 2,500+ gym goers training with ZYM

Know what went wrong in that set, before your next one.

Upload one set. See the one thing to fix.

Free, no signup. Your video stays on your phone; only a few frames are analyzed. How frames are handled.

Check my form free →

Download on theApp Store Try ZYM on Web

QR code linking to the ZYM iOS app on the App Store

Available on iPhone · Web beta also available

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Live coach

Talk instead of type.

Your coach is there while you train, not ten minutes later when the workout is already over.

Start a live call, turn on your camera, ask what to do next, or show your coach the movement you’re working on.

Ask. Show. Adjust. Keep moving.

A ZYM live coach call: talking with your coach over video while training

Your workout

Know exactly what to do today.

Your coach builds today’s workout around your goals, experience, equipment, and previous sessions. Then it turns all of that into a workout you can actually follow in the gym.

The ZYM Today screen: the day's session with exercises, sets, reps, and weights

While you train

One set at a time.

No spreadsheets. No endless logging. ZYM shows the exercise, reps, weight and rest you need right now. Finish the set with one tap and move on.

Need help? Call your coach without leaving the workout.

Your workout app shouldn’t become another workout.

ZYM workout mode: one exercise at a time with a one-tap finish-set button

Form check

See what changed in your form.

Not another meaningless 7/10 form score.

Review the frames that matter, inspect joint positions, visualize bar path, and hold to compare the analysis against the original movement.

No arbitrary score. Just something you can actually change next set.

ZYM form check: a bodyweight squat with a joint overlay for frame-by-frame review

Coach memory

A coach that actually remembers you.

Your goals, experience, training frequency, previous sessions and the feedback you give your coach all carry forward. You don’t start every conversation from zero.

You shouldn’t have to re-explain yourself every workout.

The ZYM coach screen showing what your coach remembers: goals, experience, and stats

Sessions

Plan the session. Then show up.

Book training days, see what’s planned, and keep your training history in one place.

The ZYM sessions calendar: booked training days across the month

Real checks, real fixes.

Example form checks

See all

Back squat
“My left knee caves on the last rep: mobility or just fatigue?”
@marcus_lifts
Coach
Your left knee travels inward as you come out of the hole.
Deadlift
“Back feels rounded at the start. Is it?”
@priya.trains
Coach
Your hips rise before the bar does, so the pull starts with your back.
Bench press
“Is my arch too much?”
@dan_o_fitness
Coach
Your elbows flare wide at the bottom of each rep.
Overhead press
“Feels like I lean back a lot. Should I stop doing that?”
@sofia.reps
Coach
Your ribcage flares and the lean comes from your lower back, not your hips.
Romanian deadlift
“Where should I feel this? I only feel my lower back.”
@tomlifts_
Coach
The bar drifts away from your legs on the way down.
Pull-up
“Am I using momentum without noticing?”
@aisha.k
Coach
Your hips swing forward before your elbows start bending.
Front squat
“Keep losing the bar forward at the bottom. Why?”
@nate.g
Coach
Your elbows drop as you hit depth and the bar follows them down.
Bulgarian split squat
“Which leg is actually doing the work here?”
@els_trains
Coach
Your torso shifts over the front knee, so the back leg is mostly balancing.
Barbell row
“Am I standing too upright for this to count as a row?”
@jm.strength
Coach
Your torso rises with each pull, so the last reps are half a shrug.
Hip thrust
“Feeling this in my quads more than anywhere else.”
@kenji.b
Coach
You finish by extending your knees rather than your hips.

Back squat
“My left knee caves on the last rep: mobility or just fatigue?”
@marcus_lifts
Coach
Your left knee travels inward as you come out of the hole.
Deadlift
“Back feels rounded at the start. Is it?”
@priya.trains
Coach
Your hips rise before the bar does, so the pull starts with your back.
Bench press
“Is my arch too much?”
@dan_o_fitness
Coach
Your elbows flare wide at the bottom of each rep.
Overhead press
“Feels like I lean back a lot. Should I stop doing that?”
@sofia.reps
Coach
Your ribcage flares and the lean comes from your lower back, not your hips.
Romanian deadlift
“Where should I feel this? I only feel my lower back.”
@tomlifts_
Coach
The bar drifts away from your legs on the way down.
Pull-up
“Am I using momentum without noticing?”
@aisha.k
Coach
Your hips swing forward before your elbows start bending.
Front squat
“Keep losing the bar forward at the bottom. Why?”
@nate.g
Coach
Your elbows drop as you hit depth and the bar follows them down.
Bulgarian split squat
“Which leg is actually doing the work here?”
@els_trains
Coach
Your torso shifts over the front knee, so the back leg is mostly balancing.
Barbell row
“Am I standing too upright for this to count as a row?”
@jm.strength
Coach
Your torso rises with each pull, so the last reps are half a shrug.
Hip thrust
“Feeling this in my quads more than anywhere else.”
@kenji.b
Coach
You finish by extending your knees rather than your hips.

Examples of what the coach sends back. Real checks appear here once people start sharing them.

Why ZYM

Coaching works best while you train.

Most tools help before or after your workout. ZYM is built for the part that actually counts: the middle.

Chatbot

Waits for you to stop and type.

Workout tracker

Records what you manually enter.

Personal trainer

Great coaching, but requires scheduling and costs significantly more.

ZYM

Live voice and camera coaching while you train. Connected to your workout, form feedback, training history and memory.

A short read

Why we're building ZYM the way we are.

Read the manifesto

Ready when you are

Your next workout already has a coach.

Bring ZYM to the gym and start your next session with a coach ready when you need one.

ZYM is currently in beta, and some features are still being improved.

Download on theApp Store Try ZYM on Web