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Invite clients
Add the clients you coach in person or online and give each one access to their own training space.
For coaches and personal trainers
Programs, live session tracking, and client progress — in one premium platform.
No credit card required · Cancel anytime
Onyx Coach is not just a workout logger. It gives your coaching process a repeatable path: set the client up, deliver the plan, coach the work, then adjust from real training data.
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Add the clients you coach in person or online and give each one access to their own training space.
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Create workouts, training blocks, or full programs with exercises, sets, reps, weights, rest times, and instructions.
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Log sessions during in-person coaching, or monitor online clients from the work they actually complete.
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Track progress through workout history, volume, strength estimates, and measurements instead of guesswork.
The same app your clients train with — polished, fast, simple.
One subscription covers the full platform — no paid extras, no surprises. Premium support in your language is part of every plan.
Log live sessions with gym clients and deliver programs to remote clients from the same workspace.
Every plan includes unlimited clients — premium slots decide how many get the full premium experience.
Real photo demonstrations for every movement, ready to drop into any program.
1RM estimates, volume, and measurements — per client, automatic.
Real humans, answers within hours — in English, Slovak, Czech, or German.
4.8★ on the App Store. Free for every client you coach.
Retention starts with an app your clients enjoy using. Real App Store reviews from people training with Onyx:
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.
See why in-person clients quit around day 90 — and how online and hybrid coaching multiplies retention and revenue.
Your clients use the app for free — you pay, they don't. Premium slots upgrade the clients you choose: AI exercise search, AI suggestions, and advanced filters.
14 days free on Pro and Elite · No credit card required · Cancel anytime
Yes. You can log in-person sessions live and also deliver structured programs directly to online clients inside the app.
Yes. With a trainer account you can run paired sessions — coach two clients in the same session and log both of their workouts directly on your own phone.
If you want to continue, you pick a plan inside the app. We don't ask for a card upfront, so there's nothing to cancel and you'll never be charged automatically.
Yes. Both plans include unlimited clients and the same premium support. The only difference is the number of premium client slots.
Every client can use the app for free — you pay for the plan, your clients never pay anything. Premium slots upgrade the clients you choose: AI exercise search (they can describe an exercise in their own words, in 100+ languages), AI suggestions when adding or replacing an exercise, and advanced filtering.
No. The Onyx Coach client app is free for your clients on iOS and Android — it's included in your plan.
Yes. The platform and premium support are available in English, Slovak, Czech, and German.
Yes. Premium support is included in every plan — talk to a real person within hours. We help you onboard your first clients and migrate your existing plans.
Create your trainer account in under a minute. Try it free for 14 days.
No credit card required · Cancel anytime