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AI Form Check

Film your set
Get an answer

Trayner analyses your movement rep by rep, scores your form and shows you what happened — and what to work on next.

Get Trayner App Store Google Play
  • 33 body points tracked
  • Rep-by-rep analysis
  • Videos stay on your device
A phone on a small tripod recording an athlete in a Trayner t-shirt at the bottom of a barbell squat, with green pose-tracking points and lines on the shoulders, elbows, hips, knees and ankles and a recording timer at 00:12

How it works

From video to useful feedback

Record a set on your phone. Trayner analyses the movement, shows what happened and gives you something specific to work on.

  1. Phone on a tripod recording an athlete’s squat

    Record your set

    Film your exercise from the recommended angle.

  2. Wireframe figure in a barbell squat with glowing AI pose-tracking points on the joints

    AI analysis

    Trayner tracks your movement through each rep.

  3. Four Trayner feedback cards, each with a close-up photo: back position neutral and stable, knee tracking flagged with a warning, good depth, and well-controlled balance

    Get feedback

    See your form score and where your technique changed.

  4. Chart of squat form scores rising over four weeks, from 62/100 in week 1 to 92/100 in week 4, with a knee-tracking photo for each week

    Improve over time

    Compare your form with previous sets and see what changed.

Detailed analysis

Understand exactly what
to improve

Trayner breaks your set down into specific parts of your technique, so you can see what held up, what changed and what needs attention next.

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Trayner app on a phone showing a Squat Analysis screen: a side-on squat with green pose-tracking points on the neck, shoulder, hip, knee and ankle, and a form score of 92 with the message “Great form!”

Example squat feedback

  • Close-up of an athlete’s upper back under a barbell, with pose-tracking points across the shoulders and a line down the spine

    Back position

    Neutral and stable

  • Side view of an athlete’s leg in a squat with orange pose-tracking points on the hip, knee and ankle, and guide lines showing the knee travelling forward past the toes

    Knee tracking

    Knees not in line with toes

    !
  • Front view of an athlete at the bottom of a squat with green tracking points on the hips, knees and ankles and guide lines measuring squat depth

    Depth

    Good depth

  • Close-up of an athlete’s lower leg and shoe with a green tracking line through the shin and ankle down to a balance target on the floor

    Balance

    Well controlled

Supported exercises

Form Check currently supports:

Each exercise is analysed against movement criteria specific to that exercise.

  • Athlete at the bottom of a barbell back squat in a gym, shown from the side

    Squat

  • Athlete in the start position of a barbell deadlift, gripping the bar with hips back

    Deadlift

  • Athlete lying on a flat bench, holding a loaded barbell at arm’s length above the chest

    Bench press

  • Athlete standing with a loaded barbell locked out overhead

    Overhead press

  • Athlete in a push-up on a gym floor, body straight from head to heels

    Push-up

  • Athlete seen from behind, pulling up on a bar in a power rack

    Pull-up

  • Athlete in a dumbbell lunge with the back knee close to the floor

    Lunge

  • Athlete curling a dumbbell with one arm, a second dumbbell held at the side

    Bicep curl

Side view of a barbell back squat at full depth, with green pose-tracking points and lines on the ear, shoulder, hip, knee and ankle
Good form
Side view of a barbell back squat stopping above parallel with the chest leaning forward, with the pose-tracking points and lines highlighted in red
Common issues

Form feedback

Know what changed
and where

A score tells you how the set went. Trayner also shows you why. See where your technique changed and what to focus on next time.

Try the form checker

Why it matters

A score is useful
Knowing why is better

Form Check turns your set into specific feedback you can use on the next one.

The form checker works alongside Trayner’s workout tracker, nutrition and recovery tools. For more training tips, visit the Trayner blog.

  • Understand your technique

    See which parts of your movement held up and which didn’t.

  • Know what to adjust

    Get something specific to focus on for your next set.

  • Build consistency

    See whether the same issue keeps appearing across your training.

  • See what changed

    Compare your form over time instead of relying on memory.

Your videos. Your privacy.

Your workout videos
stay on your device

Trayner analyses form on your phone. Your workout videos aren’t uploaded to Trayner’s servers or stored in the cloud.

Questions about privacy? Contact us
  • Videos stay on your phone
  • Form analysis runs on your device
  • Workout videos aren’t uploaded to Trayner’s servers

Live Coach

Want feedback while you’re still lifting?

Form Check shows you what happened after your set. Live Coach gives you feedback while you’re training.

Set up your phone and start your set. Trayner watches your movement and speaks coaching cues through your phone, so you can make adjustments without stopping to check the screen.

No stopping to check the screen. If Trayner sees something worth correcting, it tells you while you’re still training.

Try Live Coach

Live Coach is validated on squats. Other lifts are in beta.

Live Coach camera view of a barbell back squat from the side, with green pose-tracking points on the ear, shoulder, hip, knee and ankle Live
  1. Rep 3 “Keep your chest up.”
  2. Rep 4 “Good. Hold that position.”
Example cues Trayner speaks during a squat.

  • Want to review your form?

    Use Form Check

    1. Record your set
    2. See what happened
    3. Review your feedback
    4. Apply it to your next set

  • Want feedback while you’re training?

    Use Live Coach

    1. Start your set
    2. Trayner watches each rep
    3. Hear feedback while you train
    4. Adjust and keep going

FAQ

AI Form Check questions

What is Trayner’s AI Form Check?

Form Check is the part of the Trayner app that checks your exercise technique. You film a set on your phone, and Trayner scores each rep, shows you what happened and what to work on next.

How does Trayner’s AI exercise form checker work?

Film a set with your phone. Trayner tracks 33 points on your body through the set, on your device, and gives you a form score with feedback on back position, knee tracking, depth and balance.

Which exercises can Trayner analyse?

Form Check currently supports the squat, deadlift, bench press, overhead press, push-up, pull-up, lunge and bicep curl. Each exercise is analysed against movement criteria specific to that exercise.

Can Trayner check my squat form?

Yes. The squat is supported. Trayner scores each rep and gives feedback on back position, knee tracking, depth and balance.

Can Trayner check deadlift form?

Yes. The deadlift is one of the 8 exercises Form Check currently supports.

Do I need special equipment to use Form Check?

No. You film your set with your phone’s camera. Film from the recommended angle so your whole body is in frame.

Does Trayner upload my workout videos?

No. Your workout videos stay on your phone and form analysis runs on your device. Videos aren’t uploaded to Trayner’s servers or stored in the cloud.

Can I use Trayner’s Form Check at home?

Yes. Form Check works from a video filmed on your phone, so you can use it anywhere you can film your set with your whole body in frame.

Can I track whether my form is improving?

Yes. Trayner keeps your form feedback, so you can compare it with previous sets and see what changed.

Stop guessing
about your form

Film a set. See what happened. Know what to work on next.

Get Trayner App Store Google Play

Free and Pro plans, and the 14-day trial