Onyx Coach - Your Workout Diary for the Gym

The Onyx Coach app

Your trainer's plan, on your phone.

Log every set, watch a demo for every exercise and see your progress. Free on iOS and Android.

Download on the App StoreGet it on Google Play
4.8 App Store rating
Are you a trainer? See Onyx for coaches
A workout being logged in the app The home screen: this week, the weekly goal and workouts from your trainer
4.8

App Store rating

Free

on iOS and Android

450+

exercises with a video demo

5

languages in the app

Reviews

What clients say about the app on the App Store.

Krompik1App Store

"A very good and very nicely designed app where I can track and log my entire workout. Besides this feature, there are many others various types of workouts, exercise demonstrations, etc. A very good app in my opinion."

Gymgirl77777App Store

"Perfect app, beautifully made. I love the description for each exercise and the video demonstration that goes with it, as well as the training plans. Finally, there's a workout app that suits me and is exactly what I had in mind."

How it starts

Your trainer sets it up. You download the app and train.

  1. Your trainer invites you

    By email, a link or a QR code.

  2. Get the app

    Free on the App Store and Google Play. Tap your invite and sign up.

  3. Your plan is waiting

    Workouts, notes and your calendar, ready for the first session.

Training on your own? Start a new workout, save your own templates and add your own exercises.

In the gym

Open today's workout, tap the set, type the weight, rest.

Every set, logged
Every set, logged

Every set, logged

Last time's numbers sit next to today's, with a rest timer.

A demo for every exercise

A demo for every exercise

A video and your own history for each one.

Your progress

Your progress

Estimated 1RM, volume and max weight, month by month.

Exercise library

450+ exercises, each with a video demo and written cues.

Filmed in a real gym

Dumbbell shoulder press
Dumbbell shoulder press
Hack squat
Hack squat
Cable triceps pushdown
Cable triceps pushdown
Dumbbell bench press
Dumbbell bench press
Close grip lat pulldown
Close grip lat pulldown
Hip thrust machine
Hip thrust machine
Cross body hammer curl
Cross body hammer curl
Dumbbell walking lunge
Dumbbell walking lunge

Between sessions

What your trainer sends lands in the app.

Programs from your trainer

Plans with a video for every exercise, ready when you are.

Programs from the trainer in the app

Your calendar

Workouts and rest days, so you know what is next.

The month in the app, workouts marked in green

Check-ins

Weight, measurements, photos and a note, with a reminder on the day.

Notes from your trainer

Cues on each exercise, right where you log it.

Works without signal

Log in a basement gym. It syncs when you are back online.

Apple Health and Health Connect

Connect them and choose what your trainer can see.

In your language

The app in five languages.

  • English
  • Slovenčina
  • Čeština
  • Deutsch
  • ไทย

Premium

Unlimited AI exercise search and swap suggestions. Your trainer can switch it on.

See it in action

Fifteen seconds of the app, from the first set to the progress chart.

Are you a trainer?

Your clients get this app free. You plan on the web or on your phone, and it shows up in theirs.

  • 14 days free, no card
  • Unlimited clients
The Onyx Coach workout builder on the web
The same workout on the client's phone

Get the app

Free on iOS and Android. Your trainer's workouts are there when you sign in.

Download on the App StoreGet it on Google Play
QR code that opens the Onyx Coach app page on your phone

On a computer?Scan it with your phone's camera.

Not sure where to start? Find your body type in a 2-minute quiz

Train at the wrong hours and good sessions feel flat. Take the 90-second chronotype quiz