"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."
The Onyx Coach app
Log every set, watch a demo for every exercise and see your progress. Free on iOS and Android.
Are you a trainer? See Onyx for coaches
App Store rating
on iOS and Android
exercises with a video demo
languages in the app
What clients say about the app on the App 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."
"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."
Your trainer sets it up. You download the app and train.
By email, a link or a QR code.
Free on the App Store and Google Play. Tap your invite and sign up.
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.
Open today's workout, tap the set, type the weight, rest.
Last time's numbers sit next to today's, with a rest timer.
A video and your own history for each one.
Estimated 1RM, volume and max weight, month by month.
450+ exercises, each with a video demo and written cues.
Filmed in a real gym








What your trainer sends lands in the app.
Plans with a video for every exercise, ready when you are.
Workouts and rest days, so you know what is next.
Weight, measurements, photos and a note, with a reminder on the day.
Cues on each exercise, right where you log it.
Log in a basement gym. It syncs when you are back online.
Connect them and choose what your trainer can see.
The app in five languages.
Unlimited AI exercise search and swap suggestions. Your trainer can switch it on.
Fifteen seconds of the app, from the first set to the progress chart.
Your clients get this app free. You plan on the web or on your phone, and it shows up in theirs.

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