The coach's operating system
The engine does the analysis. You make the call. Your clients only ever hear from you.
Engine analyses
40 clients, overnight
Drafts a decision
in your voice
You approve
client hears from you
The ceiling
Where a fully-booked coaching week actually goes:
Hire juniors and you dilute the one thing clients came for: you. So you cap out.
01 · Why
Everyone else puts an AI in front of your client. We put it behind you.
02 · How it works
Four things PHNX works out on its own, from real data — for you to sign off.
Real data · Marcus, wk 3
PHNX
ready to progress
Drafted for you
Squat 80 → 82.5kg
🔬 Decided from his logged reps & RPE — not a calendar, not a guess.
Real data · Priya, 7-day
PHNX
recalculates
Drafted for you
🔬 Recalibrated weekly from her real weight trend + body composition — finer than a fixed number set on day one.
Dana's mesocycle · PHNX knows exactly where she is
W1
W2
W3 ● here
W4 deload
next block
🔬 Phase-block periodization builds the whole block; readiness signals — not the calendar — decide if she's ready to progress.
Signals · Sam, quietly
PHNX
flags: at risk
Drafted for you
Reach out to Sam — a check-in that lands before he decides to quit.
Approve & apply🔬 Four signals cross-referenced into one flag — the pattern you'd miss at 40 clients, caught while there's still time to save it.
03 · What they see
Every decision you approve reaches your client the human way — a normal message from you, right in their chat. No app to open. No "AI" to notice.
The PHNX app is quietly there in the background for logging, progress, and booking — your name on all of it.
Fred · your coach
last seen recently
Beyond the coaching
One place for payments and booking — so you can close Stripe, Calendly, and the spreadsheet.
Select time
Order summary
Payment method
Sessions land in your Google Calendar and your client's. Payments run on PayNow or card — your prices, your packages.
🔬 The same platform that spots a fading client is where they book and pay to stay — retention and revenue in one place.
The difference
From the founder
So I built the tool I wanted — it does the analysis overnight and hands me the decision each morning, in my voice. My clients never saw a machine. They saw me. — Fred
Early access
We're onboarding the first cohort of coaches by hand. Tell us about your practice — no obligation, just a conversation about whether PHNX fits where you're taking it.