Programming, nutrition, check-ins, video calls and payments in one account and one client app — so the work you sell is the work you actually do, not the admin around it.

The problem
Programmes in one app, macros in another, feedback in a chat thread, calls on a link you paste by hand, invoices in a document you rewrite every month.
Every handover is a place where something gets lost — and every one of them is time you cannot bill.
What you get
One price covers the list below. Nutrition is not an upgrade, video is not an upgrade, and your clients never pay to use the app you coach them in.
Programmes, periodisation, your exercise library, reusable routines.

Plans, macros and your own food library — not a separate subscription.
Video review with annotations, check-ins and messaging in one thread.
Built in. Not a link to somewhere else that you paste by hand.
iPhone and Android, free for every client you coach.
Invoices, subscriptions, recurring billing and the bookkeeping behind them.

The assistant
This one also helps you sell. The assistant follows up on enquiries, drafts the offer, and tells you which client is drifting before they cancel.
Growth stops depending on whether you felt like writing that message on a Sunday evening.

The coaching is the product. Everything else is what gets in its way.
Where you start
Same account, same client list. What changes is how much of it you switch on.
Personal trainers on the floor
Your clients, your programmes, your invoices — on your phone between sessions, not at a desk afterwards.
Start freeRemote and hybrid coaches
Asynchronous check-ins, video review and clients anywhere. Six payment providers — Stripe, Wise, Revolut, dLocal, Razorpay, Xendit — so a client in Brazil, India or Indonesia can actually pay you.
Start freeOne location, a few trainers
Turn on Studio Light and the door, the class schedule, memberships and the till appear in the same account.
See Studio LightThat is Prometheus Enterprise. It is running with pilot studios, and we are taking a small number of further pilot chains.
For your clients
They log every set, scan meals, send progress photos and read your feedback in one place. You see the session while it happens, not next week.
Free for every client you coach. iPhone and Android.
Phone-camera bar speed tracking is in there too, if that is your thing.


Who builds this
We are coaches, sport scientists, developers and athletes. The training logic comes from people who have run the sessions, and the software from people who have shipped before.
That is also why nothing here is named after one person. You are buying software for your business, and it has to outlast any of us.
Pricing
You pay for how many clients you coach — not for which parts of the product you are allowed to open.
Prices in US dollars, the same everywhere. Studio owners: what Studio Light adds.
Questions
From $19 a month for up to 5 clients, rising to $89 a month for up to 70. Every feature is in every plan — you pay for how many clients you coach, not for which parts of the product you may open. Paying yearly gives you two months free.
No. There is a 14-day trial that does not ask for a card. After that it is a paid product; that is what pays for the support and the development behind it.
No. The client app is free on iPhone and Android for every client you coach, for as long as you coach them.
No. Nutrition plans and macro tracking, video review with annotations, built-in video calls, messaging and invoicing are in every plan. There is no tier that unlocks them.
Yes. Studio Light adds check-in at the door, class scheduling, memberships, point of sale, shifts and bookkeeping to the same account for $79 a month. Chains with several sites are a separate product currently in pilot.
Set up a single client and see whether it saves you an evening. That takes a few minutes and costs nothing.
Start free — 14 days, no card