TrainerLens
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AI personal trainer

The personal trainer that watches every rep.

TrainerLens sees how you move through your phone or laptop camera. It counts every rep, corrects your form as it happens and talks you through the set. The AI runs on your device, so no picture or video ever leaves it.

Start training See the real app
  • Runs in your browser, nothing to download
  • Your camera output stays on your device
Recorded in the app
  • 33points on your body followed in every frame
  • 2,015exercises it knows how to watch
  • 0pictures or videos sent anywhere, ever
  • <1sfrom your movement to the trainer's words

Nothing to buy, nothing to wear

Your living room. Your trainer.

Stand your phone or laptop where it can see you and start moving. That is the whole setup.

A woman at home standing her phone on a small stand before a workout
Prop your phone up.A shelf, a stand or a chair will do.
A woman holding a squat on a mat in her living room
Every rep, measured.Depth, tempo and balance as you move.
A phone on a small stand facing a woman exercising on a mat
No wearables.Only the camera you already own.
A laptop open on the floor beside a woman exercising on a mat
Or open your laptop.It runs in the browser, with nothing to install.
A father and his young son doing push-ups together at home
Any room is a gym.Bodyweight or weights, 2,015 exercises.

The real app

Not a mock-up. This is it working.

These are screenshots of TrainerLens itself. The lines on the body, the count and the trainer's words are exactly what you see while you train.

The app following a woman through a set of lunges at home: lines drawn over her body and two reps counted
Lunges, mid-rep. Every joint followed, every rep counted as it happens.
The same lunge set in the app on a phone
The app counting a man's fifth lunge with dumbbells
Five counted. Four good, one flagged to work on.
The app encouraging a man mid-lunge to do one more
Coaching, mid-set. "Dig in. One more."
The app marking a lunge as a good rep
Good rep. Full depth, counted.

And everything around the workout

Today's plan, the workout library and your progress, as they look in the app.

The app home screen with today's workout and recent workouts
Today. Your workout, ready to start.
The app library of ready-made workouts
Library. 73 workouts and 30 programmes.
The app progress screen with weekly numbers and a consistency chart
Progress. What stands out, week by week.

How it works

Set your phone down. Start moving.

No wearables, no sensors, no equipment to pair. If your device has a camera, you already own everything the trainer needs.

  1. 01

    Prop up your phone

    Lean your phone against a wall or open your laptop two to three metres away. For each exercise the app shows exactly where the camera should stand.

  2. 02

    Train hands-free

    Hold a hand up to start or end a set. Make a T with your hands to pause. You never walk back to the screen in the middle of a workout.

  3. 03

    Hear it as it happens

    Every rep is counted out loud. The ones that fall short are called the moment they happen, and the set ends itself when you reach your goal.

Private by design

Your camera output never leaves your device.

The AI that follows your body runs on your own phone or computer. Each frame is looked at there and then thrown away. No recording is ever made.

  • Never recorded. Nothing is filmed or photographed.
  • Never saved. Frames are gone the instant they are read.
  • Never sent. Not to us, and not to anyone else.

The trainer works from numbers alone: reps, seconds and how far you moved. The app lists exactly what it receives, in plain words, in Settings.

Live feedback

It sees what a mirror can't tell you.

A rep counter counts. A trainer notices. Every movement is measured against how the exercise should be done, and you hear about it before the next rep starts.

1reps

Every rep, counted for you

Keep your mind on the movement. The count is on the screen in numbers you can read from across the room, and in your ear.

Half reps don't count

Too fast, too shallow or out of position, and the rep is refused. You are told why, straight away.

  • Full depthCounted
  • Stopped shortNot counted
  • RushedNot counted

Form cues, mid-set

Short, specific and spoken while it can still change the next rep.

Finish at your shoulderHips levelSlow the way downChest to the floor
0:03hold

Holds that time themselves

Planks, wall sits and static holds start when you are in position and stop when you leave it. No free hand needed.

Time under tension

Every second your muscles are working is measured, rep by rep and set by set.

Left against right

See when one side is doing less of the work, before it becomes a habit.

Knows when you're fading

Reps slowing down and depth creeping up are noticed as they start, not afterwards.

Ends the set at your goal

Hit the last rep and the set closes itself. Your points count up while you catch your breath.

The trainer

A real voice. A real opinion on your set.

The trainer follows your workout as it unfolds and talks to you the way a good coach does: calm, direct and about what you actually did.

  • Speaks during the set. Live cues in a natural voice, not a list of beeps.
  • Reviews every set. What went well, what slipped and what to do next.
  • Plans the next one. Weight and reps suggested from how the last set really went.
  • Praises with facts. "Every rep below parallel", never just "great job".
After your setSquat · 10 reps · 60 kg

Ten reps, every one below parallel. Same weight next set.

Pick the coach you want to hear

Workouts

Your plan, or one of ours.

Build a workout from exercises and sets in a minute, or start from a ready-made session or a full programme.

  • 2,015exercises
  • 73ready-made workouts
  • 30training programmes

Every way of structuring a set, in the terms lifters already use

  • Straight sets
  • Pyramid
  • Drop sets
  • As many reps as possible
  • Time under tension
  • Static holds

Progress

Proof that it's working.

Every set is saved the moment it ends. Over weeks, the numbers show what a mirror never could: more reps, deeper reps, steadier reps.

  • Personal bests for every exercise, marked the moment you beat one.
  • Form over time. How many of your reps were good ones, week by week.
  • Points and levels that reward clean work, not just more of it.

On every screen you own

Open a browser. You're in the gym.

There is nothing to install. Open TrainerLens in the browser on your phone, tablet or laptop and start your first set in under a minute.

Biceps curl · 12 kg1of 12 reps

Elbows still. Nice.

1of 10 reps

  • In your browser, today

    Phone, tablet or computer. Nothing to download and nothing to update.

  • iPhone and Android

    Apps for the App Store and Google Play are on the way.

  • One account, everywhere

    Sign in with your email on any device and your workouts, history and membership are there.

Plans

One membership. Everything included.

$29.99 a month, or $299 a year, for the camera, the counting and the trainer.

Monthly

Membership

$29.99 a month

One membership, on every device you own.

Join now Pay yearly: $299, 2 months free
  • Camera tracking and rep counting
  • Spoken counts and form cues
  • Live coaching in a natural voice while you move
  • The trainer's own review after every set
  • A next-set suggestion from how the last one went
  • Every exercise, workout and set scheme
  • Nine coaching styles to choose from
  • Points, levels and personal bests
  • History on every device you sign in on
  • One membership across browser, iPhone and Android

Your next set is being watched.

Prop up your phone and find out how many of your reps really count.

Start training

Your camera output never leaves your device.